I just upgraded RM to the latest version. When I did so all resources disappeared. Under "most active authors" I can see 7 resources which is the correct number. But they are no where to be found. What am I missing here?
What did you upgrade from? It sounds like maybe there's a permission issue. Try going into a resource category and selecting "permissions". Choose to make the category private and then undo it (we're just triggering a cache rebuild). Has that changed anything?
That would point to a cache issue. Generally, the cache rebuild being interrupted or an add-on are really the only causes of this. If it happens again (with new categories), see if you can reproduce the issue with add-ons disabled.