Getting sn.exe error code 3 with Code Contracts enabled

[Aospade]

When I have Runtime Checking and Static Checking enabled and my dll is strongly named I get the following error when trying to build in VS 2015 RTM.

The command ""C:\Program Files (x86)\Microsoft SDKs\Windows\v8.1A\bin\NETFX 4.6 Tools\sn.exe" /Rc "obj\Debug\MyDllProject.dll" "MyStrongKey"" exited with code 3.

If I turn off the runtime and static checking the dll works just fine. Seems similar to this past problem with code contracts

https://social.msdn.microsoft.com/Forums/en-US/4edaa3b3-50a5-4672-82bd-4ca5b48b7c27/release-156081310-now-live?forum=codecontracts