I just tried loading some brushes and they did not show up. Tried the different personnas (should have shown up under Pixel Persona) and NOTHING was showing - including other brushes I've loaded in the past. I came here searching and couldn't find answer. I RESET both personas and then tried again - no luck. I closed out completely, came back in, switched to Pixel Persona and there were the brushes I loaded - in fact multiple sets because I had tried to load multiple times. I'm not sure what was going on but they are visible now and I'm happy - albeit frustrated and confused and wish I understood WHAT was happening. Now I just have to figure out how to delete the multiple sets. Good luck all!