what you mean, with only Generals?, i use it on Zero Hour, and so far the only .wnd i remember it dind'topen was the 1 of the challenge .wnd files (the one wich shows the bio and info about the general, works), so hmm
just wondering, did you tried to right click on it choose properties go to compatibility and choose the compatibility mod of win 98?, it worked on me, only now i noticed i had done it
'-quickstart' also prevents the game reading the WindowTransitions.INI file, I dont advise using it. You can also use '-win' for running the game in a window.