This would be a great feature. Interface that would let a user renumber image IDs with a jQuery sort (draggable images) would be a good, intuitive way to do so… Alas, I’m not a programmer . Found some info on doing it for WP post attachments, but am unable to translate the info to BP Album+.
Never mind. I just solved this myself – a stupid mistake. My “uploads” directory had to be set to 777 permissions in order to create proper subdirectories etc. [face/palm] The randomly named files were in the *avatars* directory. That’ll teach me to never ask support questions at the end of a long work day.
By the way, it’s a standard Redhat setup on a private server, & I had to use the image URL re-mapping too… but now everything works great. Sorry to have wasted your time.