I am not able to replicate any error here though so as I already stated above when I showed you this example. The issue has to be in whatever happened to your site that you where telling me not code related there. There is no way to help you with your data though if its corrupt and causing issues I would not know how to help you.
I can reach our admin panel.
You can do a fresh new install and see if that helps or you can install Pro. Like I said you are dealing with a dead product line and it has been retired for 5 years.