In our company we have running data synchronizer for several months, Novell Data Synchronizer Version: 1.2.3 Build: 882
For the moment there are 7 devices synchronized. (iphone, ipad, samsung (android) HTC (android)

The problem that I have is that I cannot add new device (android ACE GT-S5830i) The strange thing is that this new device type already is synchronized without a problem.
The new device also has just the same android version and build number as the one that already has been synchronized.
When I connect with another device (iPad and android emulator) but with the same user that I used on the ACE then I can connect without a problem...
What can I do to determine what the problem is?