Oh yeah, I should probably repack that while on linux or emulating mac, because windows will consider the .app as a folder instead of a .app.
Extract that tinyrpgheroprinter_v_1_0.zip that you have selected to the same folder you currently are, then move everything to your applications folder.
Try to run twice it and let me know the results. Load it, if it freezes, force quit, try again. I am guessing it will still not respond, mac is a bit of an oddball and there are plenty of possible issues. But worry not, we will figure out which one it is.

