Hello,
recently I tried to use .shape save after I highlighted some blocks, but my game crashed every time I run the .shape save command.
I debugged it and it seems that on some linux OSes because of the game getting installed on /usr/share/vintagestory/ the mod doesn't have permissions to save there so it throws an uncaught exception.
TapeMeasure.cs
line 176 is where it throws the exception