Thought I'd get back to testing this now.
There are two bugs as far as I can see.
- The highlighted input field, which I'm guessing is supposed to contain a calendar, is empty
- Once I click "Post", a new page comes up, telling me "An Error Has Occured!" and "Topic ID is missing."
As a result, no event or thread is made.
This does not get logged in the Error Log.
I've gone over the Plugin Settings, and as far as I can tell, my user (testing with the admin at the moment, actually) has permission to create events.
Tested on Firefox and Chrome, just to make sure.