Hey i got around to test your application now. It was set on android for Ios, but i simply swapped this in settings to air for android. Since that's what im working on , but when i tested the app only one wall appear to be working, the very left one, m1. I find this rather odd since i see no difference on any of the rectangels. Did you test your app, was it fully functioning?
I have downloaded http://www.kglad.com/Files/forums/maze.fla
I'm having the same problem as Tixy where just one wall of the left of the maze.fla file has collision, the ball MC just passes through the other walls in the project, is there something I need to change with the checkwall function?