Server Version#:PlexMediaServer-1.41.8.9834-071366d65-x86_64_DSM7 (Synology)
Player Version#:Current iOS on iPad and iPhone, current OS (not beta)
Plex Photos will crash if you attempt to open a folder (top-level or subfolder) where the Title has been set to blank:
The reason I set the Title to blank is that I like to make my own custom tiles, and having the title text overlay them looks bad.