Hi, I kind of had the same issue. I am using Maniacontrol and had "Autosave Maplist file" activated. Maybe you have a similar setting with PyPlanet. I was able to change maplist once without issue but this would overwritte my initial maplist file. So when I tried to switch back to my initi...

Exact same error for me, happens every 2 days or so.

mixnetwork, did you solved the issue ?

Same here with the Linux build. This happen at random approx 3 times a week.