I can see the evenst in the drop down from JEvents but when I select one it populates the title of the event but not the date and time for start and finish.
It won't even let you enter anything in the boxes manually and because this is a required field I am completely stuck in setting up events.
This version was heralded as not needing JEvents but I don't want to have to set up and article for every event with details on it when it could have just all been in one place like it is in JEvents. Looks like I will just have to continue with the two programs if I can get them working together again.
I checked out your site and found the problem... the JoomlaFCK editor. That is a horrible editor and causes many problems. You can see it was keeping the tabs from loading properly, and causing an error that broke the rest of the functionality. I switched your default editor to TinyMCE and now the event creation works fine.
I'd suggest installing the free JCE editor which is by far the best option. Install and set it as your default editor in the joomla configuration. You'll be all set then.
Also, we updated the DT Register package just a little bit ago so you should download and reinstall to get the latest round of bugfixes. Thanks!