I'm trying to run a game and have been forced to use 3Da, but for some reason whenever I press the "Run" button, a popup saying "could not copy [filename] to [filename2]" apears. I have searched and found many people ask this question but get no definative answear. Can someone please help me?

I have the same problem but it seems that people doesn't reply often in this section of the forum

Extract it to the desktop, it should work fine.