I do not have the PRO version.
I do have Nitro PDF Reader.
I have had zero problems.
I am very satisfied and use Nitro daily (both with Win 7 and Win 8).
What I have noticed is that the combo of Samsung.com and Firefox, then I have trouble downloading pdfs.
Not at other sites and not with other browsers.
I Have no problems with other sites OR with other browsers.
I can save, download, display from any other site with no problems.
Only Samsung.com seems to be perculiar.
