There was just a thread on this… https://intfiction.org/t/passing-save-files-between-different-interpreters/4915/1
That deals with loading Zoom save files into Gargoyle, not the other way around. I thought that the other way around worked automatically.
However, Zoom is known to be buggy on OSX 10.8 – maybe 10.7 too – so you might just be out of luck.