Well I actually had a very similar problem regarding SC2 ALL IN 1 launcher and the StarCraft 2 beta. I would A either be pit up against AI's who would practically stand still in their base with very few structures and no challenge to defeating OR on insane AI I would face off what I would like to refer to as a ass-raping machine. I never was able to find a medium spot but I got Insane AI to work by fiddling with the Cache folder and following the exact steps given on this page: http://sc2.nibbits.com/assets/starcrack-allin1/
. DETERMINED to break down that fucking door of the closed beta and get in. I created 17 Blizzard accounts, sent specs from 6 different computers along with reconfigured the hardware on my own computer multiple times to send different samples and I waited... And waited... Alas my dreams were not to come to fruition. They were to whither and die like the charred remains of a drone line after a helian rush. Summer roles around and I still have no key, BUT theirs hope! Gamestop announces that they will be giving away keys with pre-orders!!!! VICTORY! If only that were true....
Thinking "What a moron." To which I would once again have to reply, very valid point.