Just downloaded it from cnet 204MB.
Error 1619.
Any clues?
What OS?
Maybe this will help?
Edit: You give not enough information.
What was the CIS version before installation?
Or other a software in OS was to established?
What you still use except CIS?
Probably that - that to blocks?
I understand you only Comodo FW?
Turn off during the installation of AV. Which AV are you using?