MoP, you're still using GM 7, right? You REALLY should move to 8. It's all compatible, and the engine was greatly improved. The sprite editor is WAY better(It uses actual transparency now!), the code viewer has highlighting and better line numbering, and games are compiled in C++ now, which means they run a lot better too. GM7 serials work fine with it, I switched the college network over to it a few weeks back.