Methods missing

I now get an error when I open Advanced Renamer. But it goes ahead and goes in, but there are no methods. Where did they go? It was working before this. An update glitch?

I have recently seen this when using list replace methods. I click on a list and edit, I edit another method, then go back. The list appears blank where the list should be.

Saving the file and reloading resolves the display problem. This occurred following an update.