Hi,
I have the same problem.
Database update has failed. Please make sure, that database user, defined in wp-config.php has permissions, to make changes (ALTER TABLE) to the database.
Error encountered: Field wp_ai1ec_event_feeds.feed_url is of incompatible type
Of course the database user is correct or nothing would work. With mine when I click on Calendar Feeds, it crashes. I can reactivate and it starts up.
This started today after I updated to v2.3.6, or at least that’s when I noticed it. WP v4.4.1
Thanks Tobias. I was afraid that might be the issue.
I’ll find a work around of some sort.
Cheers and Merry Christmas!
