cannot handle this error - thank you for any help

suddenly - I don't know what kind of change is responsible - I am getting the following error-message right at the beginning, when I what to run my application.

Does anybody know why and how to get this work?

By the way - other applications still work fine.

Also I tried to find the words "System.Web.Mobile" in my application code, but it does not occure!


Server Error in '/instat' 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: Execution permission cannot be acquired.

Source Error:


Line 196: <add assembly="System.EnterpriseServices, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
Line 197: <add assembly="System.Web.Mobile, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
Line 198: <add assembly="*"/>
Line 199: </assemblies>
Line 200: </compilation>


Source File: c:\windows\microsoft.net\framework\v1.1.4322\Config\machine.config Line: 198


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Version Information: Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573