I'm curious about this as the file has not changed from the original release to the current version on their website.
What other mods are you using and where did you get your template?
I just noticed that the file had a more recent date than the 2009 file already existing.
I'm using a load of mods, and the template is my own modified version of Classic. The add ons includle Canada Post, Stock by Attribute, Attributes Grid, Product Short Description, IH2, Zen Lightbox, French Pak, Column Grid, Horizontal Dropdown Menu (that I added link for Eventz), Google Analytics, Comodo Trust, Sales Report, Ceon Manual Card, XML Sitemap, About Us, Encrypted Master Password.
When I updated from zc 1.3.9d I eliminated FEC, and Superorders. I added Edit Orders and Ceon SEO.
I am certain that the front end of Events was working after the update to 1.3.9h, but I honestly don't recall if I checked the admin side - but for sure I haven't added any events since the update.
I don't have Ceon SEO on my test site, and I don't have the .htaccess on it, as in both cases it wouldn't work. Everything else is on the test site which I routinely use to test any site modifications before moving them live.
On the test site, the admin worked today but gave an error message on top of the admin page. When I unziped phpMyEdit.class.php and then that error doesn't show anymore. So I then ftp'd that file to my live site to see if it made a difference, and it doesn't.
When trying to get into the eventz admin I get a 'page does not exist' error and it loads my site map.
There is no error showing in the debug cache.