My laptop recently crashed, I had it wiped and returned to me. The wipe removed the sentinel program. I have tried repeatedly to reinstall it without any success. I have gone to the Uniden site and clicked on the download of Sentinel software. When I unzip the file and click on set up I get a message that says in part "requires .Net Framework version 2.0." It asks if I want to go to another site. When I click yes it takes me to the .Net Framework site. I then download that and it states that it won't download. The cycle has been repeated for me numerous times. Can anyone advise what I am doing wrong?