I have written an application that connects to a network printer to print forms generated by an outside application. When the app runs (on a scheduler) I get a confirmation bubble (standard "This document was sent to the printer" -- Document Name, Printer Name, Time Sent, Pages) that the document has printed, but the client insists that nothing prints.

If that notification bubble appears, then something should print, correct? Are there any issues on the development end that may be causing this or is it a network issue on the client's end and where should I go to ask about it?