I’ve fixed the problem.
The problem was caused by old calendar entries.
Clearing the howl calendar made the error disappeared.
So Thread could be closed.
Thx for your answer!
owncloud: 8.1.1 on raspbian,
cyanogenmod 5.1.1, google contacts app
photo: jpeg, 5.3k, 234x216
How to reproduce:
Result: the photo disappears on android device, the contact is transferred to oc but without a photo - not ok
Result: the photo appears on the android device - ok
Result: photo still ok on android device and oc - ok
Result: the photo disappears on android device, the photo disappears on oc - not ok
Expected result: contact photos not disappearing
Let me know what further information you need.
Thank you for the report.However this is a bug in OC whch has to do with asomehow weird format of saving image data. Please follow up there: