All the libraries that OF uses have to be built for one version of Visual Studio.
If we build libs for VS 2012 they won't link in 2013 and also 2015.
So we usually always support the latest IDE at the time of release.
In this case it is VS 2015
I apologize that we can't support multiple VS IDEs - we would love to!
Its the fact that the libs can't be used across different VS editions that stops us from doing that.
All the best!
Theo
