Hello, the solution was to disable fonts, except of the necessary system fonts. I had several thousand fonts running..! I believe it will also help you. STAN
I have the same problem - Affinity Designer and Affinity Photo can't open or save a file to any disk!!! I bought and installed the programs via AppStore and not via the web (Serif). Affinity Publisher I bought over the web (Serif) and there are not problems... I have tried all possible solutions, but nothing helped. Is there a solutions? Because otherwise these programs are useless ..!