I had this problem and had to call support. Apparently you have to have the same account on both machines with the same password. I used the admin account with the same password. That appeared to solve the problem.
User: Admin
Password: same
Domain: Server (even though the other machine is NOT the server. I did not use Server\Admin as user)

Wendell
Pediatrician in Chicago

The patient's expectation is that you have all the answers, sometimes they just don't like the answer you have for them