Hi @JoeMillion, I have taken a look at the site, and those errors seem to be happening when the setmore embed script is included to the page. Remove the embed code and it appears the error goes away.
It could be that there is something about the way the setmore embed code is added to the page, it looks like it is loading an older version of jQuery (which @pixelgeek mentioned above). I am not sure if that is the root cause, but something about that embed code is causing some issue.
Could your try removing the embed code, republish and then check the editor ? In my testing removing the embed code worked.
Thanks in advance!