Blank footer problem..

[Mr. Blogger]

I changed body background color and everything is alright on the index. But if you go to smaller pages such as the forum view or thread view most of the footer is blank...

 

[Paul B]

Very difficult to determine what the problem is based on a screenshot of, well, nothing.

It will undoubtedly be due to a template change or something you've edited in Style Properties.

You can try reverting templates related to those pages/areas until the problem is identified.
Keep a copy of the edited templates though so you can reapply the changes.