error
 

getting a security token error

cannot perform action this is only by Members and does not affect Me.

but error gets

on quick reply and post reply

Create a new style with no parent - Styles & Templates > Style Manager > Add New Style > no parent - allow it to be pickable by users. Have the users having the problem select this style and then browse the site using this totally default vbulletin style - do they still have the same problem?

how do i do this

Styles & Templates > Style Manager > Add New Style :
Parent Style: No Parent Style
Title: Default vBulletin
Allow User Selection: Yes
Save

working now thanks