Sorry, I cannot help with VS 2013.

I created an Ubuntu 12.04 64-bit virtual machine and built the Qt application from my latest source (as of today) and ran for a while to make sure that it downloaded blocks without errors.  I used the .pro file from the github 0.8.6 branch, which required a slight tweak to compile with Qt 5.1...I know it's not an exhaustive test but I tried

Also, the first post has been updated with new information and a link to my new codeplex project for a port of Litecoin source.