Hi Michael,
this sounds like a general Qt installation issue (you can check that if MSVC2010 or MSVC2012 Qt 5 projects are running). Currently we only provided packages for MSVC 2010, MSVC 2012 and MinGW compilers, so for the MSVC compilers you also need to install the Windows SDK. Easiest option if you do not have a visual studio compiler installed is probably selecting the MinGW compiler on Windows because it does not have any dependencies.
Cheers, Chris