Well, one of the imported generators no longer exist.

ah, so its no longer available?

Yes, you might be able to just remove the non-existing import and it might fix the generator.

i see, how do i do that?

You can remove this line on the lists panel:

meta:import
  from = {import:cnny-stv1}

thanks that seemed to work, sadly it removed everything i saved there though, are generators slower now also?

The old saved data is still on the previous page, not the newly saved page. I recommend also not 'saving' the edit, you can just click 'reload' on the bottom of the preview above the HTML panel to apply the changes to the code without saving.