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1. user error mean, that user uploaded the same photos twice. you can see at the album (screen shot provided at prev post).
2. what do you mean with "non-dashboard photos" ? this kind of changes need to customize jomsoical core files. and will disappear at upgrade process. and you need to re-apply it again.
1. will look into the user errors
2. When photos are posted on the main dashboard (i.e. not new photo albums created), I'd like those to be excluded -- you mentioned that new modules can be created to filter photos -- can you provide more info on that?