evolution 2.28 does not load calendars anymore

Today I tried to apply some patches by hand to my gnome-2-28 branch.
It was this one:
http://bugzilla-attachments.gnome.org/attachment.cgi?id=154058

from bug Bug 603506 evolution-data-server-2.28 crashed with SIGSEGV in
gdata_service_set_proxy()

Suddenly, evolution did not load any calendars at all anymore. I
reverted to my previous version which worked fine, rebuilt all
of evolution and eds. Still the same: Can't load calendars, can't create
any calendars. bonobo server is running.
Tried to restore from backup, still I cannot create, open or import any
calendars.

Error message is: There is no calendar available for creating events and
meetings

Please help!! This sucks:-(


-- 
thomas