Ahhh, thank you. That makes sense.
However, I've now encountered another problem.
I've searched all over the forum and found
this thread, and I followed the instructions there carefully. I put Vsync into the danmakufu folder and got the "UPX" problem message, but now I have trouble with the UPX decompression program itself. Every time I try to run the UPX program that was referred to in that thread, a command box appears for a split second, then disappears.
I searched Google and managed to find another UPX decompression program,
here, which actually does work for me, but won't decompress the Vsync.exe--It will only compress it, and it refuses to try to decompress. It claims that it's "not packed" in the first place.
How am I supposed to get the UPX program working?