Stuart,
That's definitely very strange. I hate to tell you though, that's not caused by JLinked at all. We really don't have any methods to modify JomSocial's registration process built-in to JLinked. We import the JomSocial fields into JLinked, but don't touch the other way around. If you want, you can try to disable the JLinked System, User, and Authentication plugins to verify. That shouldn't change the behavior at all, but obviously if it does, let us know.
Finally, I just went through process, up to the "Previous Positions" box at least, just to see. It's definitely a bit strange. The last that seems to go back to registration is on a white background without the template. That usually means a PHP error. I'd recommend going into Global Config of Joomla and changing Error Reporting to Maximum. That may show an error on that page (or others) that may help narrow down where and in what extensions issues are occurring.
Hope that gets you started. We have no problem taking blame where we're at fault, but in this case, it seems like something in JomSocial or overrides you've made are having issues.
Good luck!
Alex
HELP:- Register on this Site - skips most fields
