FWIW, anyone having trouble getting the Mac (or Linux which is in the PC build) version running, you'll have to go into the SlaveU.app directory and grant execution permissions for SlaveU, python, and pythonw files (directory path SlaveU-0.37-mac/SlaveU.app/Contents/MacOS). Linux people will have to do something similar, plus files in another directory. I don't have my Linux system immediately at hand, but you should find them easily enough, if you're using Linux you should probably already know what you're doing anyway.