Jan,

>Yes that would probably be a better choice for us, but we cannot

bundle IBFirstAId together with our application. Will however download
it and try >it on files to got sent to us.

Actually, current version of FirstAID which is available at our web site
is a full version, but it requests license every time you are running
recovery (not diagnose).
So you can (from license and technical points of view) include
FirstAID executables into your application, so user will be able to use
on demand.
Don't hesitate to contact our support@... for more details.

Regards,
Alexey Kovyazin
IBSurgeon