HEP - Showthread problem
 

I have suddenly lost the ability to do any mod work on threads...'

In thread viea i can remove threads but if I go into a post, click on the post, and try to delete or merge it no longer does anything.

I have not installed any hacks from last night to today so im not sure what the problem can be. any ideas?

im running 3.8 - and i reverted my showthread templates.

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

If so, then try this:
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 and see if you can delete/merge successfully.