What might be causing FM Server 12 to generate this message:
Error 8 TPC FM Server Unable to back up database "anodecross"; can't replace item with that name on destination "filemac:/Server HD/Users/todd/Dropbox/Databases/DropBox Daily/".
A couple of clients did have that file open, but 83 other files backed up fine, including several that were also in use. Last week it was a different file that could not be backed up, but it is backing up fine now. I was able to use Finder yesterday to update anodecross manually.