Budgi3Bloops

Great concept, but whenever gravity is on I just fall through the floor, even with collisions enabled. Am I doing something wrong? Also the doors don't work well for me.

Is there a way you can get it to be able to save during flight? Because when I try to save and then go back to the KSC it put the ballon back on the launch pad, so once I launch it I have to be viewing for it to exist.