I've searched around and not found anyone else with this problem (so I'm assuming just my computer), so I'm asking for help with my computer rather then reporting a bug.
I've tried both SVN's, and for some reason 3.3.5a it is coming up with a trojan (TR/Agent.cdv in the temp folder, from memory at least). From both world.exe and during the process of building world.exe. However I never had this with my 3.1.3 core. Any ideas why i'm getting this and anyone else getting this?
Also using, Avira AntiVirus.