That's the .exe from QMC2-MAME that I compiled.

It's usually clains for some .dll, but if I provide content from "c:\mingw64-w64\Qt\bin", in the same directory where QMC2-MAME.exe is, another error appears saying that the application cannot open corectly (0xc000007b).
At less in my computer.

"A user interface is like a joke. If you have to explain it, it's not that good."