ArduPy Locking up on MAC

I have been experimenting with my WIO Terminal and have got a couple of programs to work. Now with the third try I cannot view the ArduPy files and I cannot stop a running program. It will reset and start the same program over but I am unable to switch to another. When in “Arduino” mode I can view the files there but not when it is in “ArduPy” mode. When I try to access the unit a “loading” message appears then the icon disappears and I have to reset. I tried a aip build and aip flash routine with the same results. I got the programs to run by renaming then “” and renaming the older programs main1, main2, etc.
I am a real newbie with ArduPy.