I recently did a fresh install of SlimKat 5.4 on my I9100, and Google+'s Auto-Backup isn't working.
Even if I manually select photos in the Gallery and 'share' to 'Photos' (whereupon it attempts to upload them to my G+ account) it simply does nothing.
What is going on here? Does anybody have any suggestions? Additionally, when I open the Photos app, it lists all the images on my device and they can be opened, but they are completely black, as if it's having trouble reading them properly.