Forgot to say; I really need this for a LAN, and the error made my site stop functioning. I am glad I was still testing the site out, after a release this would have been fatal.
Please fix this as fast as you possibly can!
I already fixed this in SVN. Replace your admin.mls_events.php with this file and then go into configuration and save it again:
http://tools.assembla.com/mylansite/(...)/admin.mls_events.php?format=raw