Agenda View Broken

I’m assuming you mean the “Up and Coming” section, which appears to be the Upcoming Events widget?

This seems like it may be related to the cause of the bug you get with 2.0.6, as all the code is handled by twig template system.

The twig cache expires after a while so that it can be regenerated, so if it fails to automatically regenerate, you could lose formatting (depends where in the process it fails). The error you got elsewhere is complaining it can’t register the tiwg cache processes, so it sounds like the options aren’t saving properly, or they’re not being picked up from the DB.

I’d recommend going through all the option pages in Events->Settings and hitting Save Options as a starting point. This will rebuild the ai1ec options entry in WordPress, which might resolve the issue.