Unhandled microsoft.net framework exception occurred in w3wp.exe

dear all.,

I have created a Asp.net 4.0 web application in n tier architecture and published in local PC's IIS

there was no problem while creating and publishing the application.

but after publishing. 


 error popup  coming with following text 'Unhandled  microsoft.net framework exception  occurred  in w3wp.exe' while opening the link in browsers


and  i have found following error registered in event viewer:
----------------------------------------------------------------------------------
Faulting application name: w3wp.exe, version: 7.5.7601.17514, time stamp: 0x4ce7a5f8

Faulting module name: clr.dll, version: 4.0.30319.18444, time stamp: 0x52717e84

Exception code: 0xc00000fd

Fault offset: 0x003793f2

Faulting process id: 0x1fd0

Faulting application start time: 0x01cfc28a1e7683cd

Faulting application path: c:\windows\system32\inetsrv\w3wp.exe

Faulting module path: C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll

Report Id: 5c6cd29b-2e7d-11e4-a300-6c626dd17fa7
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please help me friends ,

thanks in advance