Cant use any comodo related products.

Whenever i try to install any comodo products i get a “RUNTIME ERROR: THIS APPLICATION HAS REQUESTED THE RUNTIME TO TERMINATE IN AN UNUSUAL WAY”.
This happened on Comodo firewall pro, comodo Registry cleaner.
I uninstalled them with revo uninstaller, reinstalled them and still no success, when i attempt install it produces the same error, I was using windows XP SP3 at the time this error occured, there was no reason for this to happen.
Any ideas?

Hello James do you have any other security software that may be conflicting?