Win 7 Home Edition 64 bit. I installed Cubase 5.5 on here and tried to load a project from my other computer. It pulls up a window that says “Remove tracks that could not be connected” and pretty much lists every midi track there is. Audio tracks play. I checked plugin information and the vsti’s are showing up in there just fine and I can load them and use them, but they don’t automatically load for each midi track that’s already in there. I don’t know what’s wrong. Windows 7 continually screws me over in every way. 
Save presets and re-instance VST’s.