I recently tried to make a map with man cannons and grav lifts where you stick your self with a plasma grenade after it goes around the map. i was placing shield door using the save-and-quit-to-make-it-float technique and when i would start my map again and threw my plasma grenade into the first man cannon and all the other man cannons seemed off and were not working the way they were before. i ended up having to work backwards and change everything. Has anyone ever run into this problem? does anyone know a solution?
There was a thread a little while back about this. I don't know if they ever came to a conclusion about the problem. I'm putting a link below for you to read through the discussion. Start here: Man Cannon Bug Hope this helps.