Need PDF to automatically open when Auto Publish command is complete

This is my first post, so be gentle. :-) We have our options set to Auto Publish on Save (Autocad 2011). On some of our stations, the PDF will pop up automatically. This is what we WANT to happen. On other stations, the pdf has to be found and then opened to make sure it is correct. (this step, which is apparently way to difficult for some people, is not being performed, leading to extra work/time later to complete the project) I had everyone ensure their DWGtoPDF.pc3 custom properties was set to "open in PDF viewer when done" (and when they do a straight plot, it does come right up) It just wont do it when its thru Auto Publish. Is there a variable I am missing? Mine is one of them that comes up just fine....I have looked at every setting I have and tried to compare with theirs, but it all looks the same. Help! Thanks for your time.

Have you check the publish command? In the dialog box there is option 'open in viewer when done'...

I have checked that. Ironically, mine is UNCHECKED and it still opens for me on my station.