My b2evolution Version: Not Entered

I upgraded to 2.4.5 yesterday, and everything is working fine EXCEPT the title, header, archives, and calendar aren't displaying on my blog.

I've read a few posts here and tried some different things, but nothing is working.

I've downloaded and installed the latest version of the skins I'm using.

Any suggestions on why nothing is showing except the blog posts?

Any help is appreciated...

Thanks.