I should have given you more, sorry. Here ya go.. PC , 2.43ghz p4 processor , 768mb ram , nvidia gforce3 128mb agp graphics card (although have switched opengl off and it still crashes) , windows XP pro. It crashes with or without mover. Error is just vue4pro.eon has performed an illegal operation and must shut down. Crashes randomly, sometimes when moving an object, sometimes in five minutes from loading and sometimes in 15 minutes. Let me know what else you need.. thank you for this. (I'm actually wondering if this is a dodgey copy from this dodgey shop!!>:( )