Exhibit 34.6

[Letterhead of PricewaterhouseCoopers LLP]



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| |  |  |  | PricewaterhouseCoopers LLP
| |  |  |  | 214 N. Tryon Street       
| |  |  |  | Ste 3600                  
| |  |  |  | Charlotte NC 28202        
| |  |  |  | Telephone (704) 344 7500  
| |  |  |  | Facsimile (704) 344 4100  

Report of Independent Registered Public Accounting Firm

To LaSalle Bank National Association:

We have examined LaSalle Bank
National Associations (the Company) compliance with the servicing criteria set forth in Item 1122(d) of the Securities and Exchange Commissions Regulation AB for the mortgage-backed securities transactions for which
LaSalle, as trustee, paying agent, or custodian, performed servicing activities, which transactions were initially closed on or after January 1, 2006, and that were registered with the Securities and Exchange Commission pursuant to the
Securities Act of 1933 (the Platform) described in the accompanying Report on Assessment of Compliance with Servicing Criteria (the Compliance Statement), as of December 31, 2007 and for the year then ended, excluding
criteria 1122(d)(1)(iii) and 1122(d)(4)(iv)-(xiv) which the Company has determined are not applicable to the servicing activities performed by it with respect to the Platform. Management is responsible for the Companys compliance with the
servicing criteria. Our responsibility is to express an opinion on the Companys compliance with the servicing criteria based on our examination.

Our
examination was conducted in accordance with standards of the Public Company Accounting Oversight Board (United States) and, accordingly, included examining, on a test basis, evidence about the Companys compliance with the applicable servicing
criteria and performing such other procedures as we considered necessary in the circumstances. Our examination included testing of selected asset-backed transactions and securities that comprise the Platform, testing of selected servicing activities
related to the Platform, and determining whether the Company processed those selected transactions and performed those selected activities in compliance with the applicable servicing criteria. Our procedures were limited to the selected transactions
and servicing activities performed by the Company during the period covered by this report. Our procedures were not designed to detect noncompliance arising from errors that may have occurred prior to or subsequent to our tests that may have
affected the balances or amounts calculated or reported by the Company during the period covered by this report. We believe that our examination provides a reasonable basis for our opinion. Our examination does not provide a legal determination on
the Companys compliance with the servicing criteria.

Our examination disclosed the following material noncompliance with the servicing criteria set
forth in Item 1122(d)(3)(i)(A) and (B) of Regulation AB applicable to the Company during the year ended December 31, 2007. Certain reports to investors did not include certain required information in accordance with terms set forth in
the transaction agreements and certain reports to investors did not provide information calculated in accordance with the terms specified in the transaction agreements.

In our opinion, except for the material noncompliance described in the preceding paragraph, LaSalle Bank National Association complied with the aforementioned applicable servicing criteria as of and for the year ended
December 31, 2007 for the Platform, in all material respects.



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|/s/ PricewaterhouseCoopers LLP
|February 29, 2008