In reply to Justin Tadlock.

So after sweeping through all my sites I only found three instances (all my own additional snippets to do simple cosmetic things) where this was causing an issue. Curiously one of those snippets is used on two sites and only effects one of them?

To me much of the code looks straight forward and I found the bare bones of it online recently so I am curious to know what to do with it to bring it up to date.

I guess I have some homework to do!