version 3.8 doesn't work

Couple of months ago i swichted to comodo from zonealarm. I installed version 3.5 firewall with proactive defense.
Some days ago, comodo alerted me that there was an update available. I ran the update, then i got the message to reboot. After reboot i saw no tray icon. Then i tried to start comodo but noting happend. In the Task Manager i saw cfp.exe loading for 2 seconds and it then disappeared. Also CMDAgent was loaded.
After this i wanted to do a clean install of 3.8. I manually deleted the comodo folder from program files and cleaned the registry (except i couldn’t remove the LEGACY entries). Also removed those files from the windows driver and system32 folders. I then tried to do a clean install of 3.8 but i got the same result after reboot (also tried to install in Safe Mode).
The one thing i noticed that the installer skipped asking me if wanted to install the firewall or antivirus or both. It just told me to reboot.
Eventually i did a reinstall of 3.5 and it installed normally. Also uninstalled 3.5 and tried to install 3.8 but same result again. Does anybody know what’s wrong ?

This is on a windows XP SP3 system. Also running Aviria Antivir Personal, Spybot(no teatimer), Winpatrol, Malwarebytes Anti-malware and Super Antispyware

Do a uninstallation of CIS with REVO uninstaller. http://www.revouninstaller.com/
then hopefully you will be able to install CIS 3.8 properly after that…

i do not see cis in the add/remove section, will i still be able to remove it with the revo software?

since loading this software it has caused my internet browser not to work.

Revo builds it’s own list. I don’t know if it even looks at the add/remove list built into the OS. It also has extended functions such as “Hunter Mode” in which you can uninstall a program simply by dragging it’s desktop shortcut onto the drop target.