Had this happen once before, and can't remember how I dealt with it (probably just deleted and reimported it). All of my objects have changed to a different display that I can't seem to access. Normally you'd find the actual objects in a list of various parts, but now I get this:
What...you get 1.8 K to put in an image! I'll just tell you what I'm finding.
The Objects are suddenly listed in LOD files. These are portrayed as spheres for leaves, etc. None of these are clickable to be dragged in as before. Don't really want to reimport. Any ideas? I will work on getting an image that fits this forums sensibilities.