The current pre-release of the client ("pioneer" in the version) is only compatible to itself. So you can only play with other testers. Please be aware!
Might suggest detailing what OS, and the specific characteristics of you system. Running in a VM, Windows? Limited user account...? While hard to say but looking at the stack trace it looks more like a corrupt install of java more then FAF, and FAF is encountering the errors because Java is dorked up.
