My company recently upgraded to CRM 3.0 and i was trying to get to the report
manager page in my browser to make custom reports. Unfortunately, whenever i
try to go to the report manager page i get the error listed below. Has anyone
ever seen this before? Thanks in advance for any help you can give me.

Server Error in '/ReportMgr' Application.
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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: Assembly microsoft.crm.platform.proxy.dll security
permission grant set is incompatible between appdomains.

Source Error:

Line 15:                 <add assembly="Microsoft.Crm.ObjectModel, Version=3.0.5300.0,
Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
Line 16:                 <add assembly="Microsoft.Crm.Platform.ComProxy,
Version=3.0.5300.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
Line 17:                 <add assembly="Microsoft.Crm.Platform.Proxy,
Version=3.0.5300.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
Line 18:                 <add assembly="Microsoft.Crm.Platform.Server,
Version=3.0.5300.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
Line 19:                 <add assembly="Microsoft.Crm.Platform.Sdk, Version=3.0.5300.0,
Culture=neutral, PublicKeyToken=31bf3856ad364e35" />


Source File: c:\inetpub\wwwroot\web.config    Line: 17

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Version Information: Microsoft .NET Framework Version:1.1.4322.2300; ASP.NET
Version:1.1.4322.2300