FUSEJACOBX

I download the most reccomended version of a Tekkit Classic Server off of technicpack.net I've had many servers before. But I recently have wiped my hard drive and tried to put up a new server. I extracted everything from the winrar file into a seperate folder onto my desktop so the usual. I then run "launch.bat" and this error pops up. I've searched around and can't find anything on the web. Please help.