Problem with TableView Extension

Hi all, I updated an app an app containing TableView Extension by Ken Nichols that I had developed last year and it was working perfectly.
Now every time I have a list I get this error:

What can I do?
Thank you

It is currently broken since the release of nb191

Use Tableviewer instead

Thank you. So now I will have to edit all the apps where I was using this extension? Is there much to change?

Yes, and yes.....