I get no error when running SWTOR Unleashed, it just takes a long time to boot. It probably comes has to do with how much I put on the RAMDisk.
It needs to copy files from your hard drive to RAM when you launch the game. The more you put, the longer it will take. But when you'll be in game, instead of reading "slowly" on your hard drive, it will read very fast in RAM those files. That's what this software is made for.