Got this error when changing a person into a lifetime "Honorary" plan:
Fatal error: Call to a member function commitTabsContents() on a non-object in /home/site/public_html/administrator/components/com_comprofiler/library/cb/cb.tables.php on line 1494
I went 'back' and then canceled out of user profile page. The person's Plan was indeed changed, so it worked I guess.
CB 2.3, CBsubs 4.3, PHP 7.1, J! 3.9.X