Can't Install Lite

[howdoi]

I did have DTL running on my new PC, with Windows 7, but took it off when I had problems running blueray disks with PowerDVD10. But now when I try to download I get an error message, see attachment.

I thoroughly uninstalled the original program.

Please advise me how I can install and run DT Lite successfully.

Thanks.

[Blazkowicz]

Uninstall ThreatFire.