Hi David,
Thanks for reviewing the document and your suggestions. I will take a look into ADFS to see if that section is protected (most likely needs unlocking through PowerShell) and if I crack it I will let you know what I needed to do for your reference. If that doesn’t turn anything up I will most likely fork your project so I can put a load of debugging logs in it to try to narrow down where it’s getting the error from ADFS.
Andy