Why can't delete threads and posts
 

The forum I am using which is vbb 4.0.3. It has had some problems since 4 days, Admin's, SMOD's and MOD's tools, which are used to manage threads and posts, have been unusable. ex: move, copy, delete...
When I chose and deleted threads and posts, the message was displayed which is "you do not select threads or posts yet"
Please help me...!

Thanks!

someone played with a template ?! revert to the default template and make the tests....

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?

@Lynne:
Thank you very much, I made good the damage but I have a question to you: "the written way above what a difference compared to your?"

Nexia's solution was to revert the existing template. I was simply asking you to try a default style and see if the issue was there. That lets you know if it's a template issue. Then you can go edit your custom template and do a Compare and see what the difference is and fix/upgrade it.