Cannot Open Email PDF Attachment

[Moncrief 0]

I am using Thunderbird for email.  I sent a good PDF file to myself.    When I try to open a PDF email attachment with NitroPro the following sequence occurs:

1) I get screen but nothing happens 

2) I hit "x"

3) I get a message "This will cancel pending print jobs, Are you sure?"

4)I hit  "Yes"

5) Screen showing "conversion aborted"  I hit "X"

6) Get message "the creation process has encountered an error and failed to create the PDF file."  "OK"

7. I hit "OK"

8.  The original screen comes up and the whole sequence starts again.  I keep hitting "X" and cancel and finally get out with Window X Task Master