wah... and i thought the launcher was updated...  are you by some chance using post patch 11 version of the game and is trying to play against 2 or more opponents and using green tea 0.4, starcrack 7.0, and other pre patch 11 ai??

you need to turn off the plug ins. on the launcher click Advanced and then select both of the plug ins and click Disable. then click Free For All. and update your ai. starcrack doesnt work for this launcher. try green tea, its very challenging.

at least for me that works for patch 16. not a troll here, there is patch 16 but not stated in the patch notes cause its a minor bug fix. thats what i know of that error.

This launcher was stopped from development log time ago. Try this launcher:
http://sc2.nibbits.com/assets/starcrack-allin1/
It should work with released version, like title says. I didn't try it because I have retail now, but in Phase 2 it was the only available launcher.