Showing "0" instead of the nicknames only on the index page
 

Hi all,
we just started to makes some test with the Impex tool, trying to save as much as possible of our actual phpbb2 community board.
Importing was pretty fine. With one major exception: the fact that on the index page of our new vbullettin board, on the "last post" column, all posts of the imported users are shown with a nonsense "by 0". But if you click the "0", we go directly to the profile of the nickname who wrote the post. Apparently, the problem is only on the index page, but the relationship between poster id's and posts seem to be ok.

Thanks for any suggestion you could give to us