Cannot resolve reference assemblies. Please check the reference assemblies. Could not load file or assembly 'System.Core, Version=5.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e' or one of its dependencies. The system cannot find the file specif

Hi,

      When I try to run a certain silverlight 5 project I am getting this error,like "Cannot resolve reference assemblies. Please check the reference assemblies. Could not load file or assembly 'System.Core, Version=5.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e' or one of its dependencies. The system cannot find the file specified".

I am using VS2010 SP1,Frame work is 3.5.

 I could not find any Silverlight 5 Dlls i.e System.Core,version 5.0.5.0 in GAC (Path: c:\WINDOWS\assembly\GAC_MSIL which has only one System.Core and its version is 3.5.0.0). But I have all the dlls in "C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\silverlight5\" .If I try to put the System.Core,version 5.0.5.0 manually I wont.Due to this problem I couldn't play with Silverlight projects.