I've received this dialog box innumerable times when worksharing. I usually wait about 15 seconds, and then Revit lets me proceed with what I was doing.
But this morning, the very first time I tried to synchronize, the message popped up and didn't go away until I cancelled out of it. Meanwhile, my boss was still able to access his local file and work in it. I had him close out of Revit completely, and I tried again.
After trying to synchronize a bunch of times to no avail, I decided to abandon my file and create a new local. But when I attempted to open the central file, I got the same message! This time, it appeared in the "Recent Files" screen -- the one you see when you first start Revit. I've never seen that before.
Once I got in, I compacted the central file and things ran smoothly for a while. But just now, we both ran into the same problem again!
It's just my boss and I working on the file, and we are basically in the same room.
Does anyone have experience with this issue?