6.3's "cp_upgrade_data.cgi" is very different from 6.2 and has a lot of new code such as the code for avatars and Custom Graemlins. In other words the "cp_upgrade_data.cgi" file that comes with this hack is much smaller in file size than the stock 6.3 file. Is that intentional?
The problem I'm having is that when I try to select the "Modification Wordlet" in the CP, it changes to "Wordlet List" and all I see is "All fields are required!"