Thank you for your answer.
I don’t know, but I disabled the address book in DAVx5, made a sync, then re-enabled the address book and finally a sync, now i can add contacts…
I have no explanation, to be continued …
Hi, looks like upgrading to latest version of egroupware 14 fixed the issue.
Ah - you are right - that was the problem!
Thanks a lot
I posted the problem to EGroupware as well, but did not get an answer there.
I finally chose to swith to another CalDAV-Sync app which seems to work better with EGroupware.