We are using VS2013 and .Net 4.5.1(recently migrated, but this error is there from .Net 4.0) . This error occurs only when compiling the project in platform target x64. Is t
To ignore that warning, you can install .Net Framework 4.5.2 developer pack for all OS_x86_x64, which is compatible with VS2013.
http://www.microsoft.com/en-us/download/details.aspx?id=42637