Hello,

I just upgraded my forums. I am now seeing this issue:

[[Template forums/front/index/forumRow is throwing an error. This theme may be out of date. Run the support tool in the AdminCP to restore the default theme.]]

This message displays where forums normally display.

Does this mean I need to rebuild my theme completely?

no it means that the template is either missing or throwing an error.That specific template probably needs updating.Shoot me a pm i will help you if you cant do it.