I read the update instructions and deactivated the plugin and then clicked delete and uploaded the new stable version and it said the upload failed because the old one was still there.
I tried to delete it again, and again and again and it simply refuses to delete.
Seems the upgrade deleted my custom icons. I didn’t notice it until today. It wasn’t too painful, I just had to reload them. Would it be possible to have the install check if files exist in the wp-content/uploads/mappress/icons folder before overwriting?