Get mktime() error viewing user profile. Snitz forum imported with Impex.
 

I imported the Snits forum to latest 3.X and then updated to vB4.0 at first supported release. There was no direct Impex from Snitz to vB4. When viewing some of the user profiles, I get the error message:

Code:

Warning: mktime() expects parameter 4 to be long, string given in [path]/includes/class_userprofile.php on line 260
The profile page is also messed up, see attachment (will upload later today)

It seems the error is for users that never edited their profile but I am not sure about this. It seems it is only some users as essentially all current vB users where imported but I only get the error viewing some profiles.

I have made a bug report on this but maybe someone here has a solution what I could do?