What kind of file does your program generate? a pdf ?

Maybe try converting the file (invoice) to a different format, and then try to resend - see if that makes a difference.

__________________
It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein


09 Jetta TDI
1985 300D