It's been about 3 years since I last ran one of these. I remember I had invite codes working back then. But it with this version of the code I can't seem to get invite code generation working at all. I reverted all the generation stoppers made when invite codes became obsolete based on the diffs in svn, yet they still won't work.
I know there are still some LJ instances out there, like deadjournal that are still using invite codes. Can anyone involved in those give me some pointers? Thanks again!
Edit: Everyone is so helpful! I got a simplistic custom implementation going now, needs to be refined a bit but thats all :)