CalDAV problem withSynology DSM 5.1 and EmClient

We are using the CalDAV Server of the DSM 5.1 togehter with the emClient. Unfortunately the combination between latest em Client and the DSM 5.1 update 2 löeads to the problem, that the sync process of the calendars never ends. The sync icon is shown until I close the program.

Hi Christian, what version of eM Client are you currently using on your computer? Can you please check the exact version number in Help > About?
Are you seeing any errors while trying to synchronize your calendars?

Regards,
Paul.

6.0.21040.0
The latest available version according the revision history.

Are you seeing any errors while trying to synchronize your calendars?