Thank you Tom,
Since I have recompiled the widget, the error I had originally posted appears to have disappeared. Both the mxd and the pdf/png are generated on the server. I still have 2 problems. The parcel lines are not displaying on the output files, even though they are on in the Flex Viewer. The parcel lines are shown in the output mxd and pdf/png as being "on", but they are missing from the actual display. The parcel lines feature class is joined to a data table and is set to turn off when you zoom out beyond 8400. Not sure if this is related to the join? Seems a bit strange..
My other issue is the scale of the print. I pick a scale using the widget and the red box appears as it should - that is, it covers the proper extent for the selected scale. When the pdf is generated, however, the scale has changed dramatically. I set the print scale at 2400(1:200), but when the output is generated it reads as 1:7874.02.
Any ideas? Thank you again for your time Tom.
Eric V