I think additionally I am only using:
nodebb-plugin-gravatar
nodebb-plugin-mentions
nodebb-plugin-dbsearch
nodebb-plugin-emailer-ssl-smtp
nodebb-plugin-embed-videos
I'll be trying to deactivate them one at a time.

Edit: Deactivating them all didn't help, so I tried to install the imgur plugin to see what would happen and everything works as expected I can still change my cover, but when I change the group cover even though it gets uploaded to imgur it doesn't save. On the next page change, it is back to the default cover image.

I've been playing around with nodebb v1.0.0 and can't seem to change the group cover image.
I can upload it and move it and everything, but as soon as I leave the page it's gone, but it is uploaded to public/uploads/files as groupcover and groupcoverthump.

I am however able to change my user cover.

My log doesn't show any errors:

11/3 18:22 [27739] - info: Time: Fri Mar 11 2016 18:22:42 GMT+0100 (CET)
11/3 18:22 [27739] - info: Initializing NodeBB v1.0.0
11/3 18:23 [27739] - info: NodeBB Ready
11/3 18:23 [27739] - info: Enabling 'trust proxy'
11/3 18:23 [27739] - info: NodeBB is now listening on: 0.0.0.0:4567

Anything I could do to troubleshoot this problem?