Help about session error

[kienna]

Warning: array_merge() [function.array-merge]: Argument #1 is not an array in [path]\includes\class_dm_forum.php(123) : eval()'d code on line 3

Unable to add cookies, header already sent.
File: C:\xampp\htdocs\vbulletin\includes\class_core.php
Line: 5403

Screen show this error when i add a new thread (Forum).
Anybody help me please!! Thanks!

[Videx]

I don't know, but when I go to vb.com (http://www.vbulletin.com/forum/) and search on that error "Unable to add cookies, header already sent" it turns up a lot of stuff. Something there has to be helpful.

[kienna]

I don't know, but when I go to vb.com (http://www.vbulletin.com/forum/) and search on that error "Unable to add cookies, header already sent" it turns up a lot of stuff. Something there has to be helpful.

Thank for your help, i will try :(