I’ve seen the Catalina OS issue here and workaround with saving to a local file. That doesn’t work for me. Suddenly with no warning (after using Balsamiq nearly daily), midday, this issue started on me today. I upgraded to Catalina months ago.
Please help. Balsamiq is currently totally useless to me. Specific issue is that after opening any file (including new files) I am unable to export to pdf, save, save as, etc. Doesn’t matter what target drive I have selected. As soon as I click save or cancel the dialogue just hangs and freezes. If I navigate away from the Balsamiq window, then return, the dialogue is interactive again, but as soon as I click save or cancel it hangs.