[gnrx]

Yesterday, a user indicate that, in some posts (only some posts) appear a error, in the first time I was think that are for other problem, because I don't view all code error that indicate this user to me.
In chrome (in my chrome) not appear, in chrome of the user, yes.
But appears always in Firefox.
This is the error code:

PHP Warning: Creating default object from empty value in ..../includes/class_bbcode.php on line 277
Call to a member function query_read_slave() on null on line 279 in /home/myuser/public_html/foro/includes/class_bbcode.php
#0 /home/myuser/public_html/foro/includes/class_bbcode.php(241): vB_BbCodeParser->append_custom_tags()
#1 /home/myuser/public_html/foro/includes/class_postbit.php(345) : eval()'d code(65): vB_BbCodeParser->__construct(Object(stdClass), Array)
#2 /home/myuser/public_html/foro/includes/class_postbit.php(345): eval()
#3 /home/myuser/public_html/foro/showthread.php(1096): vB_Postbit->construct_postbit(Array)
#4 {main}


Fatal User Error: Call to a member function query_read_slave() on null on line 279 in ..../includes/class_bbcode.php in ..../vb/vb.php on line 286

I view this because, when disable all plugins, not appears, I enable all, and disable one at one, when disable this, then, the post/thread with error appears well.

Regards!