I have designed a box without a lid.
Then I wanted to design a lid for it and I did something wrong.

I started a new sketch and new group->link/assemble
After that I used it to design the lid based on the box geometry.

When I try to save it as enclosure_lid.slvs to the same directory with other parts I get error:

'This sketch links the sketch "enclosure_base.slvs"; It can only be saved on the same volume'

I don't understand this. I'm not crossing any mount points because it is the same directory! What did I do wrong?

I'm running Solvespace 3.1 on arch linux