It eventually started to work, tested the hell out of it to see what it could be. I don't understand why, but it appears to only crash when Silverlight is running in chrome before launching SC2. If I do other maps it works fine, if I launch Silverlight (Netflix) after SC2 is launched it is fine, but if I have Netflix open then launch SC2 and start up EleTD, game crashes. I only tested this in Chrome (latest stable branch). Hope that helps, as strange as the cause sounds. I might try it again in a bit to see if that's REALLY causing it or just a couple coincidences. Glad I got it working though, first time I've been able to play EleTD since my WC3 broke.