Whoops, sorry about that. Hmm, I have a feeling what has happened is that you've got private messages that are attached (sent from) a user that has been deleted. Since it can't JOIN the message to a user it can't display it. The altertable is supposed to take care of that and set all of those PMs to a senderid of 1, so the message will still be available.
We could try to set the senderid to 1 on the older messages, but there's no easy way to figure out what message id you were on when the upgrade was done. What happens when the senderid is set to 1 is the sender is no longer visible.
You could grab the current message number and then maybe go back like a thousand and try that.
You'll want to do a db backup before doing this.
First get the current M_Number
SELECT MAX(M_Number) FROM w3t_Messages
Let's say that returned 10000. Subtract 1000 from that, so we get 9000 and then run this:
UPDATE w3t_Messages SET M_Sender='1' WHERE M_Number < 9000
Again, this might not catch all of the messages but should bring some of them back.
