Okay, I think I figured out what's going on...
Evidence and Missing/In Memoriam are basically running off of the same server structure.
Someone in
this thread got in touch with Dreamscape support, and it turns out that there's a server problem, but they're not sure what it is.
So I guess that's that- we just have to wait until someone fixes the servers.
Not much of a solution, but at least it's something.