I have the latest version of Firefox.
After I check my e-mail that I used with PayPal.
Using Firefox, I clicked on that link to download. Again, I received a PHP file… "iaw.php"
I noticed that the download page said something about .Net Framework.
So, I opened up Internet Explorer. Click on the download link. What do you know. It worked.
Maybe it's just me, maybe it's just Firefox. Maybe it was both. Who knows.