I couldn't see Kryptos 2 Professional listed in Download.com. Can you provide a URL for it please?
For your information some users are experiencing problems with Download.com at the moment. There is an ongoing discussion on that here;
See if there is anything there that help you.
I am running Win7 with IE8. I am not able to download the Kryptos 2 Professional software for the free 30 day trial. When I try to download, the click just keeps on taking me in a loop back to the same page. I have downloaded from CNET.com many times in the past and have NEVER had any problems. Any suggestions?