I just put the new file in the old folder and launch it from there.
Oddly, the problem was that the new version only seems to open maximized and it was opening on my second monitor (television - dualview) which was not turned on. The only reason I found out was that I turned on my television and there was MPT!
I have never had any other program that opened on the tv (unless I dragged it over there,) but no big deal hehe.
Anyway, the ST2 (along with Miroslav Philharmonik) problem is solved in newest version, just like the other guy said in the other thread, so thank you programmer(s).
Problem solved - thread closed. Thanks LPChip.