has somebody of you tried synchronizing a Nokia C5-03 handset to GroupWise? At our company we get the protocol item

Status: Systemfehler. Versuchen Sie es später erneut. [in German]

Status: System error. Try again later. [English translation resp.]

every time we try to synchronize. This text also appears as an error message in the lower part of the phone's display.

The C5-03's firmware is up to date (July 2011). As I know, we use Data Synchronizer Mobility version 1.1.1, build 457. In the same environment a Nokia E51 phone will be synchronized correctly after being upgraded with the 'Mail for Exchange' applet via OVI! (The C5-03 neither doesn need upgrading 'Mail for Exchange' nor does it allow; it's equipped with that applet at factory and updates apparently come along with a new firmware release.)

Greetings! Erich