So the vbulletin community isn’t too impressed with the bugs noted in vbulletin 4 so far. But anyway, I’ve fixed one that I had so I thought I would share it.
This arose from imported forum members having a birthday of “–“. I simply updated this to be a blank string, ie “”.
UPDATE vbtn_user SET birthday = ''
This problem was causing the user profile pages of these imported users to go all out of sync too. Hope it helps someone out there, and remember to pop by my vb forum and sign up if you own any Samsung stuff!