error when I del or remove topic

[anhvienls]

Dear all !

I have just remove data from last host to new host . and Now , when I used delete topic or sticky or remove topic by moderator , error appear "You did not select any valid threads" .
Need more help .
thanks

[Lynne]

Try disabling your modifications/plugins and see if you still have this problem.
Note: To temporarily disable the plugin system, edit includes/config.php and add this line right under <?php

define('DISABLE_HOOKS', true);

If you still have the issue, then keep them off and then create a new style with no parent:

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

Then browse the site using that totally default vbulletin style - do you still have the same problem?

[anhvienls]

?m try all , but it still this problem . :(

[Lynne]

Are all your files totally default? Look at Maintenance > Suspect File Versions and see if any say they have unexpected contents or that they are looking for version xxx, but seeing version yyy