CIS v4 setup ends prematurely [SOLVED]

I uninstalled Comodo Firewall (I don’t use the Comodo anti-virus) in order to install the latest version, v4. However, when trying to install v4, “Comodo Internet Security Setup Wizard ended prematurely because of an error.” As a relative computer novice, I have no idea what that error might be. HELP!

I had exactly the same problem. Like you, I uninstalled Comodo Firewall (ver 3, I also don’t use the Comodo anti-virus) in order to install the latest version, v4. However, when trying to install v4, “Comodo Internet Security Setup Wizard ended prematurely because of an error.”

I’m running WinXP Pro SP3. In Windows Event Viewer, I noticed the install failed with Error 1603. I searched this forum for that error and found a solution that worked for me. You have to remove the following registry key to get rid of the error:

HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall\Comodo Internet Security

That worked for me. I found this solution at this URL:
https://forums.comodo.com/empty-t53413.0.html

Thanks, it worked for me too. I hope the developers would take note.