Ok info for those stuck with this problem, heres how we fixed it.
The issue is windows explorer is using files that dropbox is trying to move, so until it does it will not finish
So what we did is we remade all the critical folders in the root folder of dropbox as team folders with the exact same names and permissions they had, then logged in to dropbox web to move all files from the User folder into individual Dropbox > Team folders to minimize impact of the change
Once all critical files are moved to their proper places, download process explorer from microsoft, then copy it somewhere (outside dropbox), run it, tell it to replace task manager.
Press CTRL+ALT+DEL
Select TASK MANAGER from the list
Process explorer should now open instead of the windows task manager.
Look any iteration of for Explorer.exe, right click and select Kill Process Tree (or SHIFT+DEL)
Once it closes, it "should" stay closed, if not then its a whole different problem, but if it does then:
Run dropbox from the process explorer window:
File=>RUN, then type:
"C:\Program Files (x86)\Dropbox\Client\Dropbox.exe"
on the "Run" box
Dropbox will open, and start doing its thing, there will be no way to check when its done directly, the best way we found is click on File=>RUN again, go to the dropbox folder, you should see the sync icons show that its doing things, when the icon on the folders inside the main dropbox folder (where ever you put it) changes to a green checkbox or gray cloud or white/green checkbox its done. (alternatively you can use resmon.exe to check for disk activity from dropbox.exe if you know how to use it)
When its done, click again on File=>RUN, but this time type:
C:\Windows\explorer.exe
The dropbox window should pop up now, and all the changes should be done, follow the prompts on the dropbox app and proceed to fix the mess it just made.
At least now its syncing again....
Now to re-point all the broken symlinks and edit all the scripts, debug all the servers and deal with the panicked users that cant find any of their files.
Thanks dropbox! we really needed this pile of horse steaming cakes on our already over worked staff, we totally dig it!
