Freeze When accessing file dialogue OSX


This problem is driving me insane and making me lose work on a regular basis. I create many projects throughout my day. Upwards of 10 - all professional.

When save for the first time often, but not always, Nuendo freezes. I have investigated whether a dead network alias or something is holding up the file dialogue but I have not found a solution.
11.01 seemed a little less prone to this. 11.02 was very crashy so a reverted. Now on 11.03 and the problem is back big time.



Is there Dropbox, or similar service involved, please?