Changing .Net versions

I have had to change .Net version due to what is installed on the server.  I get the error below.  Any ideas what I can do to solve this?

Error      1      Failed to execute command: ""C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\bin\ResGen.exe" /useSourcePath "/r:C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\System.Core.dll" "/r:C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\System.Data.DataSetExtensions.dll" /r:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Data.dll/r:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Deployment.dll /r:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.dll /r:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Drawing.dll /r:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Windows.Forms.dll /r:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Xml.dll "/r:C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\System.Xml.Linq.dll" /compile "My Project\Resources.resx,obj\x86\Debug\File_Archive_Tool.Resources.resources"". The handle is invalid.      C:\Users\csymington\AppData\Local\Temporary Projects\File Archive Tool\TRACKER      File Archive Tool