Sorry, typo:
SELECT * FROM egw_cal WHERE cal_created=20642400 OR cal_modified=20642400 OR cal_deleted=20642400 OR range_start=20642400 OR range_end=20642400;
Ok, the problem is the timestamp 20642400, from which EGroupware thinks it’s a date, newer PHP throws an error instead of an exception …
It’s fixed now:
You can apply the fix to your instance (see the howto in our help-section), wait for the next maintenance release, or delete the three events.
Ralf