Sage PDF Converter is not available

Hello Everyone :

  My PDF Converter disappears from the printers list when I try to send the invoices using Customer maintenance in A/R module.  I ran the "PL_AdvancedOptions_Ui" utility to test if my paperless is  working properly, result OK. When  I go to printer and Other devices in my computer, I can see the PDF Converter like part of the printer list. Any one have an Idea what might be happening ?

We are Running Sage 100 ERP