Mac OS X release?

Tomorrow I'll be taking some time to go down to a nearby community college where they have a Mac--I was down there this past Friday, but I didn't have enough time to do much other than to try and get hsz to run. I know for a fact that the command-line version of hsz seems to run fine on their Mac, but I don't know if the GUI will work--I recall that there was some kind of issue with wxPython running correctly on the Mac.