Yeah dear Kevin
this problem occurred without any change in settings.
those it possible about php updates?my server updated php version to 5.6

What vb version are you running? VB 4.2.3+ is required for php 5.6 compatibility. If you aren't running that you'll likely have problems.

I use 4.2.1 dear squidsk

you mean I should upgrade my vb?

What version of php are you running? Look under maintenance, php info.

in main page of control panel it said 5.6.23 :rolleyes:
but I can't access php info. it show white page

kiss the kid again for me :D

I'll do that. :)

Do you have the ability to switch php version?

no I don't. I use communal server and I know they won't change php version for me

Then you have to upgrade Vbulletin to 4.2 with the latest patch.

my version is 4.2.1
did you mean 4.2.2? or later?
on the top of my control panel page said: Latest version available: 4.2.3 Patch Level 1

Yes, that will do the trick. :)