[King Justice]

Originally Posted by GameWizard

It means one of your templates is still using old code and probably doesn't include the updated 3.7 code.

Try the header/headerinclude templates first. Make sure they are reverted. Otherwise you will have to go through the templates that are on the affected page and try to discover what code is old and have it updated by doing "View History" and checking the differences.

Worst case scenario, make a new style and reapply all your changes manually and then you should have an easier time figuring out what may have been the cause of the problem.

There are no messages in my control panel though saying that any templates are still using old code etc that need to be reverted etc...because they are customized.