Impex problems

[John Lester]

Target db is vB 4.1.4 pl 2 source is vB 3.8.5 both on my local server.

Importing only user groups, users, and private messages.

Import appears to be fine, all the users are there in the impex user groups. Moved users out of impex groups into "normal" groups.

Removed "Remove importids" and deleted the impex user groups.

Rebuilt user ranks, post, thread, and stats.

Users do not show up on member list or who's online or in the stats at the bottom of page.

Have stopped and restarted local server no changes.

No errors during impex imports, one warning (shown twice) at top of index page after imports.

Warning: number_format() expects parameter 1 to be double, string given in [path]\includes\functions.php on line 459

So now what? I need to fix this asap and push it live in about 2 hours before I go to work, or wait until tomorrow afternoon after I wake up. Any assistance would be greatly appreciated.