[trevorprinn]

That's a shame. It's worked with all the ones I've tried it on, but I suppose they are all quite old.

I've used an open source library, pdfsharp, to extract the pages, and it looks like they haven't written code to cope with some recent changes that Adobe have made.

All is not lost. If you can extract them some other way into a folder, perhaps using the MobileSheets Companion app, then you should be able to enter that folder name into the main page of the Extractor, load it and work through them.