Ah, yes, I was going to warn you about your SoJ Mac package. When you create a Mac distribution of a game from a Windows machine (Mac or Linux are OK) using a nightly build it creates a package using an out of date copy of Game. This isn't actually an engine bug, it's due to an out of date file hosted on hamsterrepublic.com.
As for the fullscreen problem, I'll like to know if that occurs if he uses the up-to-date Mac build:
http://hamsterrepublic.com/ohrrpgce/nightly/ohrrpgce-mac-minimal.tar.gz. Fullscreen doesn't work for me over VNC, so I can't debug that.
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Anyone who play with the mark+clone tools likely noticed that the keybindings in the map editor were quite annoying. I've changed them, as well as changing the way that the tools in wallmap mode work, and many small tweaks. So the map editor could do some testing before release.