Configuration running on a test machine...Exchange Server 2007

Outlook web access was working great on default site, using SSL

I set up a sharepoint application on the same site as outlook web access and
now get the following message after authenticating to outlook web access. Any
ideas if this can be fixed or how?

Server Error in '/owa' Application.
--------------------------------------------------------------------------------

Configuration Error
Description: An error occurred during the processing of a configuration file
required to service this request. Please review the specific error details
below and modify your configuration file appropriately.

Parser Error Message: Could not load file or assembly
'Microsoft.Exchange.Data, Version=8.0.0.0, Culture=neutral,
PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system
cannot find the file specified.

Source Error:


Line 47: the compiler. All assemblies in the GAC and owa\bin are
referenced automatically.
Line 48: --
Line 49: add assembly="Microsoft.Exchange.Data,
Version=8.0.0.0,
Culture=neutral,
publicKeyToken=31bf3856ad364e35"
Line 50:
Line 51:


Source File: D:\Program Files\Microsoft\Exchange
Server\ClientAccess\owa\web.config Line: 49

Assembly Load Trace: The following information can be helpful to determine
why the assembly 'Microsoft.Exchange.Data, Version=8.0.0.0, Culture=neutral,
PublicKeyToken=31bf3856ad364e35' could not be loaded.


WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value
[HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind
failure logging.
To turn this feature off, remove the registry value
[HKLM\Software\Microsoft\Fusion!EnableLog].