Forum Just Upgraded to vB 4.0.2
 

Like the tittle says, I just finish upgrading my vB 3.8 Forum to vB 4.0.2 after I've been testing it for a while in my test forum. The upgrade went well, at least thats what I thought but when it asked for my ID nd Password to login into the admin cp, after I typed it in I got this error.

Code:
Warning: array_merge() [function.array-merge]: Argument #1 is not an array in [path]/includes/class_bootstrap.php(1146) : eval()'d code on line 4

Fatal error: Call to a member function hide_errors() on a non-object in /mnt/w0220/d05/s19/b02d5315/www/Foro_Del_Buchon_Jiennense/includes/class_bootstrap.php(283) : eval()'d code on line 4
What could have cause this error and how can it be fixed?

Thank you