I just upgraded my DT Register from 2.5.9 to 2.6.3. I followed all of the instructions in the readme file and I have an issue.
When I went into the custom fields section to open and resave my custom fields, there are no custom fields shown. I had 4 custom fields before I upgraded and now I have none. The fields still show up in my events and registration records and they show up on the view registrants configuration page but they are nowhere to be found on the Custom Fields page. Also, when I click the new button on the custom fields page nothing happens.
Also, when I create a new event, the fields are there for me to choose from.
I have tried this on IE8 with compatibility mode on and off as well as with Firefox and I get the same result.
We discovered already and fixed a problem where two files were missing from the new 2.6.3 package which were related to custom fields. The backend will not work without them. Please download 2.6.3 again and reinstall, then you should be all set.