Cubik Studio

I'm having an issue where I cannot save or export anything I'm working on in Cubik Studio on macOS High Sierra.

If I click on Save, Save As or Export nothing happens. I have checked and unchecked the "Use Native File Browser if Possible" option to no avail.

Also, I noticed that anything changed in Preferences is not saving either.

Help!

I'm having the same issue - can't open, can't import, can't save... nothing.