So where do I need to go to get to the terminal program?
It seems you just have to open the terminal in the same folder of that you unziped the files and type that command line in my comment:
chmod a+x octofurry.app/Contents/MacOS/*
I'll hope that no ones gets it before you, but here is a free steam key:
Q4RJI-RDVCM-REXECThanks for your patience :D