Exhibit 10.24.1

EXECUTION VERSION

AMENDMENT NO. 1

AMENDMENT NO. 1 dated as of August 9, 2013, among each of the “Borrowers” listed
on the signature pages hereto (collectively, the “Borrowers”), each of the
“Parent Guarantors” listed on the signature pages hereto (collectively, the
“Parent Guarantors”), each of the “Subsidiary Guarantors” listed on the
signature pages hereto (collectively, the “Subsidiary Guarantors”; together with
the Borrowers and the Parent Guarantors, collectively, the “Credit Parties”),
each of the “Lenders” listed on the signature pages hereto (collectively, the
“Lenders”) and Citibank, N.A., as administrative agent for the Lenders (together
with its successors in such capacity, the “Administrative Agent”).

The Borrowers, the Parent Guarantors, the Lenders and the Administrative Agent
are parties to a Credit Agreement dated as of December 13, 2011 (the “Credit
Agreement”). The Credit Parties and the Lenders wish now to amend the Credit
Agreement in certain respects, and accordingly, the parties hereto hereby agree
as follows:

Section 1. Definitions; Authorization. Except as otherwise defined in this
Amendment No. 1, terms defined in the Credit Agreement are used herein as
defined therein.

Section 2. Amendments. Subject to the satisfaction of the conditions precedent
specified in Section 4 below, but effective as of the date hereof, the Credit
Agreement shall be amended as follows:

2.01. References Generally. References in the Credit Agreement (including
references to the Credit Agreement as amended hereby) to “this Agreement” (and
indirect references such as “hereunder”, “hereby”, “herein” and “hereof”) shall
be deemed to be references to the Credit Agreement as amended hereby.

2.02. Defined Terms. Section 1.01 of the Credit Agreement is hereby amended as
follows:

(a) Amended Definition. The following definition shall be amended to read its
entirety as follows:

“Maturity Date” means August 9, 2018; provided that if such date is not a
Business Day, the Maturity Date shall be the immediately preceding Business Day.

(b) Deleted Definitions. The definition of “Principal Payment Dates” shall be
deleted.

2.03. Amortization. Section 2.08 of the Credit Agreement is hereby amended as
follows:

(a) Repayment. Clause (ii) of Section 2.08(a) shall be amended and restated in
its entirety to read as follows:

“(ii) [Reserved]”

 

AMENDMENT NO. 1

--------------------------------------------------------------------------------

(b) Adjustment of Amortization Schedule. Section 2.08(b) shall be amended and
restated in its entirety to read as follows:

“(b) [Reserved]”

2.04. Optional Prepayments. Section 2.09(a) of the Credit Agreement is hereby
amended by deleting the last sentence thereof.

Section 3. Representations and Warranties. Each Credit Party represents and
warrants to each Holder that immediately before and after giving effect to this
Amendment No. 1 (a) the representations and warranties set forth in Article IV
of the Credit Agreement and in the other Loan Documents are true and correct in
all material respects on the date hereof as if made on and as of the date hereof
(or, if any such representation or warranty is expressly stated to have been
made as of a specific date, such representation or warranty shall be true and
correct in all material respects as of such specific date), and (b) no Default
or Event of Default has occurred and is continuing.

Section 4. Conditions Precedent. The amendments set forth in Section 2 hereof
shall become effective, as of the date hereof (the “Amendment No. 1 Effective
Date”), upon the satisfaction of the following conditions precedent:

(a) the Administrative Agent shall have received counterparts of this Amendment
No. 1 executed by each Credit Party and each Lender party to the Credit
Agreement;

(b) the Borrowers shall have paid all fees and expenses of the Administrative
Agent and the Lenders in connection with this Amendment No. 1 (including,
without limitation, the invoiced fees and expenses of counsel to the
Administrative Agent); and

(c) the Administrative Agent shall have received the following, in form and
substance reasonably satisfactory to the Administrative Agent:

(i) certified copies of the resolutions of the Board of Directors of each Credit
Party approving the transactions contemplated by this Amendment No. 1 and the
execution and delivery of this Amendment No. 1 and of all documents evidencing
other necessary corporate action and governmental approvals, if any, with
respect to this Amendment No. 1 or the Credit Agreement; and

(ii) a certificate of the Secretary or an Assistant Secretary of each of the
Credit Parties certifying the names and true signatures of the officers of such
Credit Party authorized to sign this Amendment No. 1 and the other documents
required to be delivered hereunder.

Section 5. Ratification of Obligations. Each Credit Party, by its execution of
this Amendment No. 1, hereby (a) unconditionally confirms and ratifies that all
of its obligations (including, without limitation, any guarantee obligations)
under the Loan Documents to which it is a party shall continue uninterrupted and
in full force and effect for the benefit of the Holders, (b) represents,
warrants and agrees that on and after the date hereof, it will continue to
obtain benefits from the incurrence of Loans to, and the issuance of Letters of
Credit for the account of, the Borrowers, and (c) agrees that on and after the
date hereof, all references in the Loan Documents to the “Credit Agreement”
shall be deemed to be and are references to the Credit Agreement as amended
hereby.

 

AMENDMENT NO. 1

--------------------------------------------------------------------------------

Section 6. Miscellaneous. Except as herein provided, the Credit Agreement shall
remain unchanged and in full force and effect. This Amendment No. 1 is a Loan
Document for all purposes of the Credit Agreement. This Amendment No. 1 may be
executed in any number of counterparts, all of which taken together shall
constitute one and the same amendatory instrument and any of the parties hereto
may execute this Amendment No. 1 by signing any such counterpart. This Amendment
No. 1 shall be governed by, and construed in accordance with, the law of the
State of New York.

[Signature Pages Follow]

 

AMENDMENT NO. 1

--------------------------------------------------------------------------------

IN WITNESS WHEREOF, the parties hereto have caused this Amendment No. 1 to be
duly executed and delivered as of the day and year first above written.

 

CREDIT PARTIES BORROWERS TC GROUP INVESTMENT HOLDINGS, L.P. By:   Carlyle
Holdings II L.P., its general partner   By:    /s/ Daniel A. D’Aniello     Name:
Daniel A. D’Aniello     Title: Chairman and Managing Director TC GROUP CAYMAN
INVESTMENT HOLDINGS, L.P. By:   Carlyle Holdings II L.P., its general partner  
By:   /s/ Daniel A. D’Aniello     Name: Daniel A. D’Aniello     Title: Chairman
and Managing Director TC GROUP CAYMAN, L.P. By:   Carlyle Holdings III L.P., its
general partner   By:   /s/ Daniel A. D’Aniello     Name: Daniel A. D’Aniello  
  Title: Chairman and Managing Director CARLYLE INVESTMENT MANAGEMENT, L.L.C.  
By:   /s/ Adena T. Friedman     Name: Adena T. Friedman     Title: Chief
Financial Officer and
Managing Director

 

SIGNATURE PAGE TO AMENDMENT NO. 1 TO THE CARLYLE GROUP CREDIT AGREEMENT

--------------------------------------------------------------------------------

PARENT GUARANTORS TC GROUP, L.L.C. By:   Carlyle Holdings I L.P., its general
partner   By:    Daniel A. D’Aniello     Name: Daniel A. D’Aniello     Title:
Chairman and Managing Director CARLYLE HOLDINGS I L.P.   By:   Daniel A.
D’Aniello     Name: Daniel A. D’Aniello     Title: Chairman and Managing
Director CARLYLE HOLDINGS II L.P.   By:   Daniel A. D’Aniello     Name: Daniel
A. D’Aniello     Title: Chairman and Managing Director CARLYLE HOLDINGS III L.P.
  By:   Daniel A. D’Aniello     Name: Daniel A. D’Aniello     Title: Chairman
and Managing Director

 

SIGNATURE PAGE TO AMENDMENT NO. 1 TO THE CARLYLE GROUP CREDIT AGREEMENT

--------------------------------------------------------------------------------

SUBSIDIARY GUARANTORS TC GROUP INVESTMENT HOLDINGS SUB L.P. By:   TC Group
Investment Holdings, L.P., its general partner By:   Carlyle Holdings II L.P.,
its general partner   By:    Daniel A. D’Aniello     Name: Daniel A. D’Aniello  
  Title: Chairman and Managing Director TC GROUP CAYMAN INVESTMENT HOLDINGS SUB
L.P. By:   TC Group Cayman Investment Holdings, L.P., its general partner By:  
Carlyle Holdings II L.P., its general partner   By:   Daniel A. D’Aniello    
Name: Daniel A. D’Aniello     Title: Chairman and Managing Director TC GROUP
CAYMAN SUB L.P. By:   TC Group Cayman, L.P., its general partner By:   Carlyle
Holdings III L.P., its general partner   By:   Daniel A. D’Aniello     Name:
Daniel A. D’Aniello     Title: Chairman and Managing Director TC GROUP SUB L.P.
By:   TC Group, L.L.C., its general partner By:   Carlyle Holdings I L.P., its
sole member   By:   Daniel A. D’Aniello     Name: Daniel A. D’Aniello     Title:
Chairman and Managing Director

 

SIGNATURE PAGE TO AMENDMENT NO. 1 TO THE CARLYLE GROUP CREDIT AGREEMENT

--------------------------------------------------------------------------------

CARLYLE KNOX HOLDINGS, L.L.C.   By:    Daniel A. D’Aniello     Name: Daniel A.
D’Aniello     Title: Chairman and Managing Director CARLYLE HOLDINGS FINANCE
L.L.C.   By:   Daniel A. D’Aniello     Name: Daniel A. D’Aniello     Title:
Chairman and Managing Director CARLYLE HOLDINGS II FINANCE L.L.C.   By:   Daniel
A. D’Aniello     Name: Daniel A. D’Aniello     Title: Chairman and Managing
Director

 

SIGNATURE PAGE TO AMENDMENT NO. 1 TO THE CARLYLE GROUP CREDIT AGREEMENT

--------------------------------------------------------------------------------

LENDERS CITIBANK, N.A. By    /s/ Michael Vondriska   Name: Michael Vondriska  
Title: Vice President JPMORGAN CHASE BANK, N.A. By   /s/ Lauren Gubkin   Name:
Lauren Gubkin   Title: Vice President             J.P. Morgan BANK OF AMERICA,
N.A. By   /s/ Alysa A. Trakas   Name: Alysa A. Trakas   Title: Director BARCLAYS
BANK PLC By   /s/ Irina Dimova   Name: Irina Dimova   Title: Vice President
CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH By   /s/ John D. Toronto            /s/
Michael Spaight   Name: John D. Toronto               Michael Spaight  
Title: Authorized Signatory     Authorized Signatory

 

SIGNATURE PAGE TO AMENDMENT NO. 1 TO THE CARLYLE GROUP CREDIT AGREEMENT

--------------------------------------------------------------------------------

DEUTSCHE BANK AG NEW YORK BRANCH By    /s/ Michael Winters   Name: Michael
Winters   Title: Vice President By   /s/ Marcus M. Tarkington   Name: Markus M.
Tarkington   Title: Director GOLDMAN SACHS BANK, USA By   /s/ Mark Walton  
Name: Mark Walton   Title: Authorized Signatory MORGAN STANLEY BANK, N.A. By  
/s/ Michael King   Name: Michael King   Title: Authorized Signatory SOCIETE
GENERALE By   /s/ Shelley Yu   Name: Shelley Yu   Title: Director UBS LOAN
FINANCE LLC By   /s/ Lana Gifas   Name: Lana Gifas   Title: Director By   /s/
Joselin Fernandes   Name: Joselin Fernandes   Title: Associate Director

 

SIGNATURE PAGE TO AMENDMENT NO. 1 TO THE CARLYLE GROUP CREDIT AGREEMENT

--------------------------------------------------------------------------------

SILICON VALLEY BANK By    /s/ Amy Choi   Name: Amy Choi   Title: Vice President

 

SIGNATURE PAGE TO AMENDMENT NO. 1 TO THE CARLYLE GROUP CREDIT AGREEMENT

--------------------------------------------------------------------------------

Accepted and Acknowledged by: CITIBANK, N.A., as Administrative Agent By    /s/
Michael Vondriska   Name: Michael Vondriska   Title: Vice President

 

SIGNATURE PAGE TO AMENDMENT NO. 1 TO THE CARLYLE GROUP CREDIT AGREEMENT