FOURTH AMENDMENT TO CREDIT AGREEMENT

The Administrative Agent, the Lenders and the Company are parties to that certain Credit Agreement dated as of August 30, 2010, as amended by that certain First Amendment to Credit Agreement dated December 16, 2011 (the “First Amendment”), as further amended by that certain Forbearance Agreement dated May 18, 2012 (the “Forbearance Agreement”), as further amended by that certain Second Amendment to Credit Agreement dated as of June 6, 2012 (“Second Amendment”), and as further amended by that certain Third Amendment to Credit Agreement dated as of August 28, 2012 (“Third Amendment”, and collectively with the above, the “Credit Agreement”). The Company and the Original Guarantors executed and delivered that certain Guaranty and Collateral Agreement dated as of August 30, 2010 (the “Guaranty/Collateral Agreement”), pursuant to which, among other things, the Original Guarantors guaranteed the Company’s payment and performance of its obligations under the Credit Agreement and the Company and the Original Guarantors granted Administrative Agent a security interest in the Collateral (as defined therein). The Additional Guarantors executed and delivered a Joinder Agreement to the Guaranty/Collateral Agreement dated as of May 23, 2012, pursuant to which the Additional Guarantors assumed, jointly and severally with the Original Guarantors, all of the obligations of the Company and the Original Guarantors arising under the Guaranty/Collateral Agreement.

The Administrative Agent and each Lender have agreed with the Obligors to make certain other amendments to the Credit Agreement, subject to the terms and conditions contained in this Fourth Amendment.

Definitions. Capitalized terms used and not otherwise defined herein have the meanings given them in the Credit Agreement. The terms “Credit Agreement” and “Agreement” shall mean the Credit Agreement, as amended by the First Amendment, the Forbearance Agreement, the Second Amendment, the Third Amendment and this Fourth Amendment.

Amendments to Credit Agreement. Effective as of the Fourth Amendment Effective Date, the Credit Agreement is hereby further amended as follows:

Amended Definitions. The following definitions in Section 1.1 of the Credit Agreement are amended as follows:

Agreement. The definition of “Agreement” as set forth in the preamble to the Credit Agreement is amended to specifically include: (i) the First Amendment to Credit Agreement dated as of December 16, 2011, entered into between the Company and the Administrative Agent, on its own behalf and on behalf of the Lenders; (ii) the Forbearance Agreement dated as of May 18, 2012, entered into among the Company, several of the Loan Parties, the Administrative Agent and the Lenders; (iii) the Second Amendment to Credit Agreement dated as of June 6, 2012, entered into among the Company, several of the Loan Parties, the Administrative Agent and the Lenders; (iv) the Third Amendment to Credit Agreement dated as of August 28, 2012, entered into among the Company, several of the Loan Parties, the Administrative Agent and the Lenders; and (v) the Fourth Amendment to Credit Agreement dated as of November 9, 2012, entered into among the Company, several of the Loan Parties, the Administrative Agent and the Lenders, as such may be further amended, modified, supplemented, and replaced and/or restated from time to time.

Revolving Commitment. The definition of “Revolving Commitment” in Section 1.1 of the Credit Agreement is deleted in its entirety and replaced with the following:

“Fourth Amendment” means that certain Fourth Amendment to Credit Agreement dated as of November 9, 2012, among the Obligors (as defined in the Fourth Amendment), the Lenders, and the Administrative Agent.

“Fourth Amendment Effective Date” means the date upon which all conditions precedent to the effectiveness of the Fourth Amendment have been satisfied or waived in accordance with the terms of the Fourth Amendment.

Representations and Warranties. Each Obligor represents on its behalf, and on behalf of each other Loan Party, to the Administrative Agent and the Lenders as of the date hereof that: (i) such Obligor’s execution of this Fourth Amendment has been duly authorized by all requisite action of such Obligor; (ii) no consents are necessary from any third parties for such Obligor’s execution, delivery or performance of this Fourth Amendment; (iii) this Fourth Amendment, the Agreement, and each of the other Loan Documents constitute the legal, valid and binding obligations of such Obligor enforceable against such Obligor in accordance with their terms, except to the extent that the enforceability thereof may be limited by bankruptcy, insolvency or other laws affecting the enforceability of creditors rights generally or by equity principles of general application; (iv) except as previously disclosed to Administrative Agent in writing or disclosed on amended schedules to the Credit Agreement and the Guaranty/Collateral Agreement attached to this Fourth Amendment as Exhibit A and except with respect to the representations and warranties contained in Sections 9.5 and 9.14 of the Agreement and in Sections 5(iv), (v) and (vi) of the First Amendment, all of the representations and warranties contained in Section 9 of the Agreement, in Section 5 of the First Amendment, in Section 7 of the Forbearance Agreement, and in Section 4 of the Second Amendment are true and correct in all material respects with the same force and effect as if made on and as of the date of this Fourth Amendment except to the extent such representations and warranties expressly by their terms relate only to an earlier date; (v) after giving effect to this Fourth Amendment, there is no Unmatured Event of Default or Event of Default; and (vi) since the date of the Forbearance Agreement, there has been no event or occurrence that would reasonably be likely to give rise to a Material Adverse Effect. Company hereby further represents and warrants that it has disclosed to Administrative Agent and the Lenders all material facts and circumstances relating to the Loan Parties’ business, assets, liabilities, properties, condition (financial or otherwise), results of operations or prospects of the Loan Parties.

Fees and Expenses. Company shall promptly pay all out of pocket fees, costs, expenses (including, without limitation, fees, costs, and expenses of counsel and financial advisors) and other amounts owing to Administrative Agent and the Lenders under the Credit Agreement and the other Loan Documents upon demand, including, without limitation, all reasonable fees, costs and expenses incurred by the Administrative Agent and the Lenders in connection with the preparation, negotiation, execution, and delivery of this Fourth Amendment.

Conditions Precedent. This Fourth Amendment shall become effective as of the date set forth in the introductory paragraph to this Fourth Amendment, but only if:

duly executed counterparts of this Fourth Amendment that, when taken together, bear the signature of: (i) each Obligor; (ii) the Administrative Agent, and (iii) the Lenders; and

all other documents reasonably requested by the Administrative Agent in connection with the transactions contemplated by this Fourth Amendment, including, without limitation, corporate resolutions and certificates.

The Company has paid in same day funds all fees and expenses that may be owing to Administrative Agent and the Lenders pursuant to the Credit Agreement and the other Loan Documents (including, without limitation, pursuant to Section 4 of this Fourth Amendment), any agent fee letter, or other arrangement (as such have been amended pursuant to any amendments required by the Administrative Agent).

Effect of Amendment. Except as expressly provided for herein, the execution, delivery and effectiveness of this Fourth Amendment shall not operate as a waiver of any right, power or remedy of the Administrative Agent or any Lender under the Credit Agreement or any of the other Loan Documents, nor constitute a waiver of any provision of the Credit Agreement, any of the other Loan Documents or any existing Unmatured Event of Default or Event of Default.

Reaffirmation.

Each Obligor hereby acknowledges and confirms that as of the date hereof: (i) the Credit Agreement and the other Loan Documents remain in full force and effect as amended hereby and shall not be impaired or limited by the execution and effectiveness of this Fourth Amendment; (ii) no Obligor nor any other Loan Party has any defense to its obligations under the Credit Agreement and the other Loan Documents; and (iii) the Liens of the Administrative Agent under the Loan Documents secure all the Obligations, are reaffirmed in all respects, continue in full force and effect, have the same priority as before this Fourth Amendment, and are not impaired or extinguished in any respect by this Fourth Amendment. Until the Obligations are Paid in Full, each Obligor agrees and covenants that it is bound by

Each Original Guarantor and each Additional Guarantor hereby: (i) represents and warrants that all representations and warranties contained in the Guaranty/Collateral Agreement are true and correct in all material respects (or, with respect to any representation or warranty that is itself modified or qualified by materiality or a “Material Adverse Effect” standard, such representation and warranty is true in correct in all respects) on and as of the Fourth Amendment Effective Date with the same effect as though made on and as of such date, except to the extent such representations and warranties specifically refer to an earlier date, in which case such representations and warranties are true and correct in all material respects (or, with respect to any representation or warranty that is itself modified or qualified by materiality or a “Material Adverse Effect” standard, such representation and warranty is true in correct in all respects) as of such earlier date; and (ii) acknowledges and agrees that (A) notwithstanding the conditions to effectiveness set forth in this Fourth Amendment, it is not required by the terms of the Credit Agreement or any other Loan Document to consent to the amendments to the Credit Agreement effected pursuant to this Fourth Amendment and (B) nothing in this Fourth Amendment, the Credit Agreement, or any other Loan Document shall be deemed to require the consent of such Guarantor to any future amendments to the Credit Agreement.

Release. As a material part of the consideration for the Administrative Agent and the Lenders entering into this Fourth Amendment, each Obligor (collectively “Releasor”) agrees as follows (the “Release Provision”):

Releasor hereby releases and forever discharges Administrative Agent and each Lender and such parties’ predecessors, successors, assigns, officers, managers, directors, shareholders, employees, agents, attorneys, consultants, representatives, parent corporations, subsidiaries, and affiliates (hereinafter all of the above collectively referred to as “Lender Group”) jointly and severally from any and all claims, counterclaims, demands, damages, debts, agreements, covenants, suits, contracts, obligations, liabilities, accounts, offsets, rights, actions, and causes of action of any nature whatsoever, including, without limitation, all claims, demands, and causes of action for contribution and indemnity, whether arising at law or in equity, whether presently possessed or possessed in the future, whether known or unknown, whether liability be direct or indirect, liquidated or unliquidated, whether presently accrued or to accrue hereafter, whether absolute or contingent, foreseen or unforeseen, and whether or not heretofore asserted, which Releasor may have or claim to have against any of the Lender Group, in each case to the extent arising or accruing prior to and including the Fourth Amendment Effective Date; provided,

Releasor agrees not to sue any of the Lender Group or in any way assist any other person or entity in suing any of the Lender Group with respect to any claim released herein. The Release Provision may be pleaded as a full and complete defense to, and may be used as the basis for an injunction against, any action, suit, or other proceeding which may be instituted, prosecuted, or attempted in breach of the release contained herein.

Releasor is the sole owner of the claims released by the Release Provision, and Releasor has not heretofore conveyed or assigned any interest in any such claims to any other person or entity.

Releasor understands that the Release Provision was a material consideration in the agreement of Administrative Agent and each Lender to enter into this Fourth Amendment.

It is the express intent of Releasor that the release and discharge set forth in the Release Provision be construed as broadly as possible in favor of the Lender Group so as to foreclose forever the assertion by Releasor of any claims released hereby against any of the Lender Group.

Governing Law. This Fourth Amendment shall be governed by and construed under the laws of the State of Missouri without giving effect to choice or conflicts of law principles thereunder.

Section Titles. The section titles in this Fourth Amendment are for convenience of reference only and shall not be construed so as to modify any provisions of this Fourth Amendment.

Counterparts; Facsimile Transmissions. This Fourth Amendment may be executed in one or more counterparts and on separate counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument. Signatures to this Fourth Amendment may be given by facsimile or other electronic transmission, and such signatures shall be fully binding on the party sending the same.

Patriot Act Notice. Administrative Agent, each Lender and Bank of America, N.A. (for itself and not on behalf of any other party) hereby notifies each Obligor and each other Loan Party that, pursuant to the requirements of the USA Patriot Act, Title III of Pub. L. 107-56, signed into law October 26, 2001 (the “Act”), it is required to obtain, verify and record information that identifies each Obligor and each other Loan Party, which information includes the name and address of each Obligor and each other Loan Party and other information that will allow the Administrative Agent, such Lender or Bank of America, N.A., as applicable, to identify the Obligors and each other Loan Party in accordance with the Act.

Incorporation By Reference. The Administrative Agent, the Lenders and the Obligors hereby agree that all of the terms of the Loan Documents are incorporated in and made a part of this Fourth Amendment by this reference. The Administrative Agent, the Lenders and the Obligors hereby agree that this Fourth Amendment and any other document referred to herein or required to be delivered hereby is a “Loan Document.”

Statutory Notice - Oral Commitments. Nothing contained in the following notice shall be deemed to limit or modify the terms of this Fourth Amendment and the other Loan Documents: