Haha, I didn't know that would happen. But I'm not surprised. Ecco PC is quite a different beast from the other games. It's a mess internally with its multiple graphics modes. Yes, it doesn't allow you to move the window past a screen border, because the programmers were too lazy to handle clipping, or didn't know that there's an IDirectDrawClipper that would do the work for them... The Sonic games should go fullscreen only on the monitor they're currently on, because my code handles the switching there. Not so for Ecco. I am planning to bring it in line with the Sonic games, as far as the window handling is concerned, but that is going to take some major reworking. Hmm, that implies SONIC_P5.EXE gets tested, as it should be. The code makes a list of every .exe in the folder and then weeds out all the entries that don't have the expected name, version info, or other characteristics. You could try deleting SONIC_P5.EXE (it's useless anyway), and see if the error message changes. For some reason I can't explain, SONICCD.EXE is apparently not found on your system, although it is there! Are some compatibility or security settings enabled for it? Sonic's Schoolhouse? Ok, one more for the list.