The event registration installed fine and I was able to create new events. However once the event was created when I select the event from the list the popup window is missing the scroll up/down bar on the right side and registrants are unable to sign up. I also received reports from users stating that they could no longer login to the site. They were receiving the dreaded "No Transport" error.
I reinstalled 6.00.17 and the login errors went away and the scroll ability returned.