there is STILL the Mac problem.
http://www.unrealsoftware.de/forum_posts.php?post=420604
http://www.unrealsoftware.de/forum_posts.php?post=416448&goto=416504#post416504
Its still not fixed. There are some ways around it(like opening the containing folder etc.) but now those ways doesn't work in the current version anymore.
There is no fully working Mac version for cs2d since approximately 4-5 Versions.
I hope you can finally investigate this problem and fix it. Its really frustrating for Mac users. Probably most of the people simply doesn't play anymore, they don't even report the bug.