User1535942433 posted
Hi Chait,
Accroding to your description,as far as I think,you could reinstall the following items to your GAC using the following commands from the vs command line run as an administrator:
gacutil -i "C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\Extensions\Microsoft\Web Tools\Publish\Microsoft.VisualStudio.Web.Publish.dll"
gacutil -i "C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\Extensions\Microsoft\Web Tools\Publish\Microsoft.VisualStudio.Web.Internal.Contracts.dll"
Best regards,
Yijing Sun