I am having the same issue.
I can create an event fine, and everything works great. However, if I edit the event after creation, something changes and instead of going to the /event/XXX page, I am redirected to /venue/XXXX.
The link on the calendar displays correctly, as "/event/XXX", and the pop-up has the correct information/date/etc. But as soon as I click on the link, I am redirected to /venue/XXX (the venue is whatever venue I happened to enter for that particular event).
It displays a message of "this event has passed", and the 'date' of the event becomes the date of my most recent edit, and not the actual date of the event.
In the admin, however, the date still appears to be correct.
As a work-around, I've currently been deleting and re-creating events to get it to work, but it's becoming a hassle.
This is for a corporate client, and I was looking into the "Pro" version for them, but I really do need it to be working before I can approach them about that.
Thank you in advance for any help you can provide.