GameMaker v3.9.92 is now an official release. You can get the latest update from the GameMaker web page at:
http://www.macgamemaker.comv3.9.92 - 1/30/09
-FIX: Using REPEAT with a negative number resulted in an infinite loop. All REPEAT loops will now execute at least once even if the variable is less than 1.
-FIX: Additional fixes for any remaining REPEAT bugs.
-FIX: PRINT text wasn't showing up until the entire script was completed.
-FIX: The "Do on mouse down" option in click areas did not work correctly in compiled games.
-MOD: Increase the maximum lines of code to 750.
-MOD: Updated internet links to point to new site.
If you've been using a beta version you should still download this update because it has more fixes for the REPEAT bug than the last beta did.