@Pisarz The funniest thing is, it actually never happened before. When it started happening, though, it just kept goin' on. And I have no idea how to get rid of that,
Now, I don't need compatibility settings at all (for some weird reason, it works perfectly fine) and I don't think it's related to the Voodoo GFX or the .dll files, neither. I don't think a file got corrupted, neither... maybe it's something related to the virtual drive. Not sure. Not sure.
It's really strange.
However, I somehow managed to take a picture of the error message (finally!). Here it is.
While it might look crappy, remember, it's still valuable: