If I leave it empty, it does not work either. But evolution itself has access to the
addressbook, calendar etc.
I found the solution for my problem:
The error was caused by some old libaries of Evolution 2.28 and 2.30. If
you upgrade Evolution in Debian Unstable, the new libedataserver,
libecal etc. libaries are installed additionally and the old ones get
If you remove them, the sync works fine.