cfprint problem

We have a CF application that uses <cfprint...>.  This morning  this code started throwing errors that it can not print the the  designated printer.  Looking at the ColdFusion Administrator for the  instance this code runs in, that is true.  There are not printers  listed.

But looking at another ColdFusion Instance on the same system sees all  the printers.  Both of these instances are configured to run under the  same domain user and this user has permissions to see the printers.

Can anybody provide some insight on why one instance would see printers  and another would not?