WARRANT TO PURCHASE STOCK

Exhibit 4.2

THIS WARRANT AND THE SHARES ISSUABLE HEREUNDER HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR OTHERWISE IN ACCORDANCE WITH APPLICABLE LAW.

WARRANT TO PURCHASE STOCK

THIS WARRANT CERTIFIES THAT, for value received, receipt of which is hereby acknowledged, ORIX Venture Finance LLC (“Holder”) is entitled to purchase the number of fully paid and nonassessable shares of the Class of Stock (the “Shares”) of Management Dynamics Inc. (the “Company”) at the initial exercise price per Share (the “Warrant Price”) set forth above, as constituted on the date hereof and as adjusted pursuant to the other terms of this Warrant, subject to the provisions and upon the terms and conditions set forth in this Warrant. This Warrant is being issued pursuant to an Amended and Restated Schedule to Loan and Security Agreement between the Company and Holder dated as of the date hereof, which amends the Schedule to the Loan and Security Agreement between the Company and Holder dated July 6, 2006 (as amended, the “Loan Agreement”) (Capitalized terms used herein, which are not defined, shall have the meanings set forth in the Loan Agreement.)

ARTICLE 1. SHARES; EXERCISE.

1.1 Number of Shares. The number of Shares initially subject to this Warrant shall initially be the number of Shares set forth above. In the event that the Company does not borrow the full amount of Tranche B of the Term Loan, then the number of Shares initially subject to this Warrant shall be reduced as follows: The number of Shares subject to this Warrant shall be reduced by (i) a number of Shares equal to the difference between $4,000,000 and the total amount of Tranche B of the Term Loan borrowed by Borrower, (ii) multiplied by 9%, and (iii) divided by the Warrant Price (the “Reduction Shares”); provided that if, prior to any borrowing of Tranche B of the Term Loan, there is an Acquisition (as defined in Section 1.9 below), then there shall be no reduction in the number of Shares initially subject to this Warrant under this Section 1.1. Notwithstanding anything herein to the contrary, in no event shall Holder be entitled to exercise this Warrant as to any of the Reduction Shares prior to consummation of an Acquisition, nor shall the Holder be entitled to exercise this Warrant as to any of the Reduction Shares after February 28, 2008 (or any later date to which the parties have agreed in writing to extend the period during Tranche B of the Term Loan may be disbursed). For example, if at a particular date the Borrower had borrowed only $1,000,000 of Tranche B of the Term Loan, then the number of Reduction Shares at such date would be 122,727 Shares (($4,000,000 minus $1,000,000) multiplied by 9% and divided by $2.20), and, at such date, Holder would only be entitled to exercise this Warrant as to up to 245,455 Shares (368,182 Shares minus 122,727 Shares), unless an Acquisition had been consummated.

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1.2 Method of Exercise. Holder may exercise this Warrant by delivering (including a facsimile transmission) a duly executed Notice of Exercise in substantially the form attached as Appendix 1 to the principal office of the Company. Unless Holder is exercising the conversion right set forth in Section 1.3, Holder shall also deliver to the Company the aggregate Warrant Price for the Shares being purchased (i) by wire transfer or by check, or (ii) by notice of cancellation of indebtedness of the Company to Holder, or (iii) a combination of (i) or (ii).

1.3 Conversion Right. In lieu of exercising this Warrant as specified in Section 1.2, Holder may from time to time convert this Warrant, in whole or in part, into a number of Shares determined by dividing (a) the aggregate fair market value of the Shares upon the proposed whole or partial exercise of this Warrant minus the aggregate Warrant Price of such Shares by (b) the fair market value of one Share. The fair market value of the Shares shall be determined pursuant to Section 1.6 below.

1.4 Effective Date of Exercise. This Warrant shall be deemed to have been exercised immediately prior to the close of business on the date of its surrender for exercise as provided above. The person entitled to receive the Shares issuable upon exercise of this Warrant shall be treated for all purposes as the holder of record of such shares as of the close of business on the date the Holder is deemed to have exercised this Warrant.

1.5 No Rights of Shareholder. This Warrant does not entitle Holder to any voting rights as a shareholder of the Company prior to the exercise hereof. Upon exercise hereof, as set forth herein, the Holder shall be deemed to be a shareholder of the Company holding the number of shares as to which this Warrant has been exercised on the date the Notice of Exercise in substantially the form attached as Appendix 1 has been delivered to the principal office of the Company with any payment or other documents called for by the terms hereof.

1.6 Fair Market Value. If the Shares are traded in a public market, the fair market value of the Shares shall be the closing price of the Shares reported for the business day immediately before Holder delivers its Notice of Exercise to the Company. If the Shares are not traded in a public market, the Board of Directors of the Company shall determine fair market value in its reasonable good faith judgment. The foregoing notwithstanding, if Holder advises the Board of Directors in writing that Holder disagrees with such determination, then the Company and Holder shall promptly agree upon a reputable investment banking firm to undertake such valuation. If the Company and Holder are unable to agree on such investment banking firm, then each party shall choose one reputable investment banking firm and the two firms so chosen shall choose a third investment banking firm, which third firm shall conduct the valuation. If the valuation of such investment banking firm is more than five percent (5%) greater than that determined by the Board of Directors, then all fees and expenses of such investment banking firm shall be paid by the Company. In all other circumstances, such fees and expenses shall be paid by Holder.

1.7 Delivery of Certificate and New Warrant. Promptly after Holder exercises or converts this Warrant, the Company shall deliver to Holder certificates for the Shares acquired and, if this Warrant has not been fully exercised or converted and has not expired, a new Warrant representing the Shares not so acquired shall be delivered to Holder.

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1.8 Replacement of Warrants. On receipt of an affidavit of an officer of the Holder of the loss, theft, destruction or mutilation of this Warrant and, in the case of loss, theft or destruction, on delivery of an indemnity agreement reasonably satisfactory in form and amount to the Company or, in the case of mutilation, on surrender and cancellation of this Warrant, the Company at its expense shall execute and deliver, in lieu of this Warrant, a new warrant of like tenor.

1.9 Acquisition of the Company. Upon the closing of any Acquisition the successor entity shall assume the obligations of this Warrant, and this Warrant shall be exercisable for the same securities, cash, and property as would be payable for the Shares issuable upon exercise of the unexercised portion of this Warrant as if such Shares were outstanding on the record date for the Acquisition and subsequent closing. The Warrant Price shall be adjusted accordingly. As used herein, “Acquisition” means any sale, license, or other disposition of all or substantially all of the assets of the Company, or any reorganization, consolidation, or merger of the Company in which the holders of the Company’s voting securities before the transaction (for such purpose treating all outstanding options and warrants to purchase voting securities of the Company as having been exercised and treating all outstanding debt and equity securities convertible into voting securities of the Company as having been converted) beneficially own less than 50% of the outstanding voting securities of the surviving entity after the transaction.

1.10 Automatic Exercise Prior to Expiration. To the extent this Warrant is not previously exercised as to all of the Shares subject hereto, and if the fair market value of one Share is greater than the Warrant Price then in effect, this Warrant shall be deemed automatically exercised pursuant to Section 1.3 above (even if not surrendered) immediately before its expiration date as set forth in this Warrant. For purposes of such automatic exercise, the fair market value of one Share upon such expiration shall be determined pursuant to Section 1.6 above. To the extent this Warrant or any portion thereof is deemed automatically exercised pursuant to this Section, the Company agrees to promptly notify the holder hereof of the number of Shares, if any, the holder hereof is to receive by reason of such automatic exercise.

ARTICLE 2. ADJUSTMENTS TO THE SHARES.

2.1 Stock Dividends, Splits, Etc. If the Company declares or pays a dividend on its common stock (“Common Stock”) payable in Common Stock or other securities, or subdivides the outstanding Common Stock into a greater amount of Common Stock, then upon exercise of this Warrant, for each Share acquired, Holder shall receive, without cost to Holder, the total number and kind of securities to which Holder would have been entitled had Holder owned the Shares of record as of the date the dividend or subdivision occurred.

2.2 Reclassification, Exchange or Substitution. Upon any reclassification, exchange, substitution, or other event that results in a change of the number and/or class of the securities issuable upon exercise or conversion of this Warrant, Holder shall be entitled to receive, upon exercise or conversion of this Warrant, the number and kind of securities and property that Holder would have received for the Shares if this Warrant had been exercised immediately

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before such reclassification, exchange, substitution, or other event. After the occurrence of such an event, the Company or its successor shall promptly issue to Holder a new Warrant for such new securities or other property. The new Warrant shall provide for adjustments which shall be as nearly equivalent as may be practicable to the adjustments provided for in this Article 2 including, without limitation, adjustments to the Warrant Price and to the number of securities or property issuable upon exercise of the new Warrant. The provisions of this Section 2.2 shall similarly apply to successive reclassifications, exchanges, substitutions, or other events.

2.3 Adjustments for Combinations, Etc. If the outstanding Shares are combined or consolidated, by reclassification or otherwise, into a lesser number of shares, the Warrant Price shall be proportionately increased.

2.4 [intentionally omitted]

2.5 No Impairment. The Company shall not, by amendment of its Articles or Certificate of Incorporation or through a reorganization, transfer of assets, consolidation, merger, dissolution, issue, or sale of securities or any other voluntary action, avoid or seek to avoid the observance or performance of any of the terms to be observed or performed under this Warrant by the Company, but shall at all times in good faith assist in carrying out of all the provisions of this Article 2 and in taking all such action as may be necessary or appropriate to protect Holder’s rights under this Article against impairment.

2.6 Fractional Shares. No fractional Shares shall be issuable upon exercise or conversion of the Warrant and the number of Shares to be issued shall be rounded down to the nearest whole Share. If a fractional share interest arises upon any exercise or conversion of the Warrant, the Company shall eliminate such fractional share interest by paying Holder a cash amount computed by multiplying the fractional interest by the fair market value of a full Share.

2.7 Certificate as to Adjustments; Other Adjustments. Upon each adjustment of the Warrant Price, the Company at its expense shall promptly compute such adjustment, and furnish Holder with a certificate of its Chief Financial Officer setting forth such adjustment and the facts upon which such adjustment is based. The Company shall, upon written request, furnish Holder a certificate setting forth the Warrant Price in effect upon the date thereof and the series of adjustments leading to such Warrant Price. If any change in the outstanding securities of the Company or any other event occurs, as to which the other provisions of this Article 2 are not strictly applicable, or if strictly applicable would not fairly protect the purchase rights of the Holder in accordance with such provisions, then the Board of Directors of the Company shall make an adjustment in the number and class of shares subject to this Warrant, the Warrant Price or the application of such provisions, so as to protect such purchase rights as aforesaid and to give the Holder, upon exercise for the same aggregate Warrant Price, the total number, class and kind of securities as it would have owned had the Warrant been exercised prior to the event and had it continued to hold such securities until after the event requiring the adjustment.

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ARTICLE 3. REPRESENTATIONS AND COVENANTS OF THE COMPANY.

3.1 Representations and Warranties. The Company hereby represents and warrants to the Holder as follows:

(a) The initial Warrant Price hereunder is equal to the exercise price of the Company’s most recently granted options to purchase its Common Stock, which were options to purchase a total of 547,500 shares of Common Stock conditionally granted on January 24, 2007.

(b) All Shares which may be issued upon the exercise of the purchase right represented by this Warrant, and all securities, if any, issuable upon conversion of the Shares, shall, upon issuance, be duly authorized, validly issued, fully paid and nonassessable, and free of any liens and encumbrances except for restrictions on transfer provided for herein or under applicable federal and state securities laws. The Company shall, at all times, reserve a sufficient number of Shares and of shares of Common Stock for issuance upon Holder’s exercise of its rights hereunder.

(c) The Capitalization Table attached hereto as Exhibit A is true and complete as of the Issue Date.

3.2 Notice of Certain Events. If the Company proposes at any time (a) to declare any dividend or distribution upon its Common Stock, whether in cash, property, stock, or other securities and whether or not a regular cash dividend; (b) to offer for subscription pro rata to the holders of Common Stock any additional shares of stock of any class or series or other rights; (c) to effect any reclassification or recapitalization of Common Stock; (d) to merge or consolidate with or into any other corporation, or sell, lease, license, or convey all or substantially all of its assets, or to liquidate, dissolve or wind up; or (e) offer holders of registration rights the opportunity to participate in an underwritten public offering of the company’s securities for cash, then, in connection with each such event, the Company shall give Holder (1) at least 30 days prior written notice of the date on which a record will be taken for such dividend, distribution, or subscription rights (and specifying the date on which the holders of Common Stock will be entitled thereto) or for determining rights to vote, if any, in respect of the matters referred to in (a) and (b) above; (2) in the case of the matters referred to in (c) and (d) above at least 30 days prior written notice of the date when the same will take place (and specifying the date on which the holders of Common Stock will be entitled to exchange their Common Stock for securities or other property deliverable upon the occurrence of such event); and (3) in the case of the matter referred to in (e) above, the same notice as is given to the holders of such registration rights.

3.3 Information Rights. So long as the Holder holds this Warrant or at least 10% of the Shares initially subject to this Warrant, but prior to an initial public offering of the Company’s Common Stock, the Company shall deliver to the Holder (a) promptly after mailing, copies of all notices or other written communications to the shareholders of the Company, (b) annual financial statements, audited by independent certified public accountants, and certified by an Officer of the Company, within 180 days after the end of each fiscal year of the Company, (c) a Company-prepared quarterly financial statement of the Company, within forty-five (45) days after the end of each fiscal quarter of the Company, and (d) a Company-prepared monthly financial statement of the Company, within thirty (30) days after the end of each month.

3.4 Registration Under Securities Act of 1933, as amended. The Company agrees that, with respect to the Shares, Holder shall have the same registration rights as are set forth in Sections 2.3 and 2.4 of the Second Amended & Restated Investor Rights Agreement dated-as of October 7, 2005 (as amended by the First Amendment thereto dated October 25, 2006, and as the

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same may be amended in good faith from time to time hereafter) (the “Investor Rights Agreement”), provided that (i) such registration rights shall be junior to the registration rights which the “Holders” (as defined in the Investor Rights Agreement) have under the Investor Rights Agreement (it being understood that the Holder shall not be entitled to initiate a registration pursuant to Section 2.4 of the Investor Rights Agreement), and (ii) if, hereafter, James Preuninger, John Preuninger, or any other present or future executive officer of the Company is given any greater registration rights with respect to Common Stock (other than Shares of Common Stock which are “Registrable Securities” under the Investor Rights Agreement), Holder shall be given the same such registration rights.

ARTICLE 4. REPRESENTATIONS, WARRANTIES OF THE HOLDER. The Holder represents and warrants to the Company as follows:

4.1 Purchase for Own Account. Except for transfers to Holder’s affiliates, this Warrant and the securities to be acquired upon exercise of this Warrant by the Holder will be acquired for investment for the Holder’s account, not as a nominee or agent, and not with a view to the public resale or distribution within the meaning of the Securities Act of 1933, as amended (the “1933 Act”), and the Holder has no present intention of selling, granting any participation in, or otherwise distributing the same. The Holder also represents that the Holder has not been formed for the specific purpose of acquiring this Warrant or the Shares.

4.2 Disclosure of Information. The Holder has received or has had full access to all the information it considers necessary or appropriate to make an informed investment decision with respect to the acquisition of this Warrant and its underlying securities. The Holder further has had an opportunity to ask questions and receive answers from the Company regarding the terms and conditions of the offering of this Warrant and its underlying securities and to obtain additional information (to the extent the Company possessed such information or could acquire it without unreasonable effort or expense) necessary to verify any information furnished to the Holder or to which the Holder has access.

4.3 Investment Experience. The Holder: (i) has experience as an investor in securities and acknowledges that the Holder is able to fend for itself, can bear the economic risk of the Holder’s investment in this Warrant and its underlying securities and has such knowledge and experience in financial or business matters that the Holder is capable of evaluating the merits and risks of its investment in this Warrant and its underlying securities and/or (ii) has a preexisting personal or business relationship with the Company and certain of its officers, directors or controlling persons of a nature and duration that enables the Holder to be aware of the character, business acumen and financial circumstances of such persons.

4.4 Accredited Investor Status. The Holder is an “accredited investor” within the meaning of Regulation D promulgated under the 1933 Act.

4.5 Private Issue. The Holder understands (i) that the Shares are not registered under the 1933 Act, or qualified under applicable state securities laws on the ground that the issuance contemplated by this Warrant will be exempt from the registration and qualifications requirements thereof, and (ii) that the Company’s reliance on such exemption is predicated on the representations set forth in this Section 4.

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4.6 Risk of No Registration. The Holder understands that if the Company does not register with the Securities and Exchange Commission pursuant to Section 12 of the Securities Exchange Act of 1934, as amended (the “1934 Act”), or file reports pursuant to Section 15(d) of the 1934 Act, or if a registration statement covering the securities under the 1933 Act is not in effect when it desires to sell (i) the rights to purchase Shares pursuant to this Warrant, or (ii) the Shares, it may be required to hold such securities for an indefinite period.

ARTICLE 5. MISCELLANEOUS.

5.1 Term. This Warrant is exercisable, in whole or in part, at any time and from time to time on or before the Expiration Date set forth above.

5.2 Legends. This Warrant and the Shares shall be imprinted with a legend in substantially the following form:

THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AS PERMITTED UNDER APPLICABLE LAW.

5.3 Compliance with Securities Laws on Transfer. This Warrant and the Shares issuable upon exercise of this Warrant may not be transferred or assigned in whole or in part without compliance with applicable federal and state securities laws by the transferor and the transferee.

5.4 Transfer Procedure. Subject to the provisions of Section 5.2, Holder may transfer all or part of this Warrant or the Shares issuable upon exercise of this Warrant by giving the Company notice of the portion of the Warrant being transferred setting forth the name, address and taxpayer identification number of the transferee and surrendering this Warrant to the Company for reissuance to the transferee(s) (and Holder if applicable). Notwithstanding the foregoing, the Holder will not voluntarily and knowingly assign or transfer this Warrant or the Shares to any competitor of the Company without the Company’s prior written consent, except that this sentence shall not apply to a sale or assignment of this Warrant or the Shares (i) after an initial public offering of the equity securities of the Company, or (ii) in connection with a sale of Common Stock to such competitor by other holders of such Common Stock, which sale involves at least 10% of the Common Stock then outstanding, or (iii) in connection with an Acquisition.

5.5 Notices. All notices and other communications from the Company to the Holder, or vice versa, shall be deemed delivered and effective when given personally or mailed by first-class registered or certified mail, postage prepaid, to such address as may have been furnished to the Company or the Holder, as the case may be, in writing by the Company or the Holder from time to time.

5.6 Waiver; Amendment. This Warrant and any term hereof may be changed, waived, discharged or terminated only by an instrument in writing signed by the party against which enforcement of such change, waiver, discharge or termination is sought.

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5.7 Issue Tax. The issuance of the securities subject to this Warrant shall be made without charge to the Holder for any issue tax (other than applicable income taxes) in respect thereof.

5.8 Attorneys Fees. In the event of any dispute between the parties concerning the terms and provisions of this Warrant, the party prevailing in such dispute shall be entitled to collect from the other party all costs reasonably incurred in such dispute, including reasonable attorneys’ fees.

5.9 Governing Law. This Warrant and all acts, transactions, disputes and controversies arising hereunder or relating hereto, and all rights and obligations of Holder and Company hereunder shall be governed by, and construed in accordance with the internal laws (and not the conflict of laws rules) of the State of New Jersey.

[signatures on next page]

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Warrant to Purchase Stock-Signature Page

APPENDIX 1

NOTICE OF EXERCISE

1. The undersigned hereby elects to purchase                  shares of the Common Stock of Management Dynamics Inc. pursuant to the terms of the attached Warrant, and tenders herewith payment of the purchase price of such shares in full.

1. The undersigned hereby elects to convert the attached Warrant into Shares in the manner specified in the Warrant. This conversion is exercised with respect to                  of the Shares covered by the Warrant.

[Strike paragraph that does not apply.]

2. Please issue a certificate or certificates representing said shares in the name of the undersigned or in such other name as is specified below:

3. In exercising its rights to purchase the Shares, the undersigned hereby confirms and acknowledges the representations and warranties made in Section 4 of the Warrant.