This isn't new this is exactly what you reported last time and it hasn't changed.
Most reliable source I can find says that it could be related to using AppData, though I didn't think our exe's use that at all, only the compiler.http://greatis.com/cleanvirus/remove-malware/behaveslike-win32-pwszbot-fh-usubucip-exe.htm
It could also be some of the extensions because those load DLL's, one of the reasons the old GM games still get flagged is because of DirectPlay, which is obsolete. Studio also does not handle resources the way the old GM did, its executables are essentially self-extracting 7zips, you can actually use 7zip to extract the audio from any standalone exe made with Studio, just extract it like a 7zip, though I haven't tested on the standalone installer. This is what my attempted decompiler originally did besides scanning for png and bmp files.
I'll run the test myself before and after disabling some extensions. Either way I am not really concerned with what some silly virus scanner on the internet says, we know for a fact it's not a virus.
Edit: Oddly enough switching off all systems and disabling every extension except paths gets it flagged by a different scanner, but still 1/57
Qihoo-360 Malware.QVM20.Gen 20150123
Using only Direct3D9 the same way but instead of OpenGL with no extensions flags it twice.
CMC Packed.Win32.Katusha.1!O 20150120
McAfee-GW-Edition BehavesLike.Win32.PWSZbot.ch 20150122
For why you shouldn't care what this scanner thinks either, read the following:http://www.cplusplus.com/forum/beginner/67634/