I'm not sure whether this particular problem is among them, but
it seems
that at least at some point, patches were necessary to get SyncML
working in eGroupware. Do you know whether they are included in your
installation?
See
http://bugzilla.moblin.org/show_bug.cgi?id=5631#c9
I just patched my install, restarted apache and relaunched syncevolution, but till no
sugar (even if there are less errors this time). Log attached.
Xav