[Tutor] Two Scripts, Same Commands, One Works, One Doesn't

[John Collins]

Probably not applicable, but before deleting the original post, I 
distinctly remember seeing in amongst the text of the post, ".pfd"
as part of a larger string of text, and as distinct from ".pdf". I
wondered then if the OP's problem might be a typographical error?
I am a student not a tutor - this is wild speculation!
Best Regards,
John Collins.