windows crashes and Comodo firewall

I was running an older version of Comodo Firewall, when I checked and found that it had been significantly upgraded from the version that I had. I uninstalled it and then installed the newer version. I installed this version without any problems but as soon as I restarted the computer, every couple of seconds and error comes up that says Windows Explorer has encountered a problem and needs to close.

I have no idea what to do and would appreciate all help.