Forum error logging in to admincp after upgrade to 4.0.1 from 3.8
 

This sucks. I just upgraded from 3.8. I have post_thanks loaded. I get the following two error messages and it won't let me login to AdminCP:

"Warning: fetch_template() calls should be replaced by the vB_Template class. Template name: post_thanks_navbar_search in [path]/includes/functions.php on line 3893"

"Unable to add cookies, header already sent.
File: /home/vawhigso/public_html/forums/includes/class_core.php
Line: 4501"