On just one of the three or four machines which I am running Enpass for Windows on, the update to v6.0.6 asks for me to approve a New Sync, which takes me to Dropbox, I log in, the press the Yes, I Agree or similar button, which launches a new instance of Enpass (so, there are now two running). I login in successfully to the second instance, which updates and otherwise works correctly. In the background there is still an instance with the swirlies spinning like it is waiting for something. Regardless of the order I close these two instances the next time I launch Enpass it will require that I do a New Sync again...restarting the loop. Other machines are working fine, and database on Dropbox is updating.