Upgrade to V. 3 problem

After I downloaded version 3 (I didn’t uninstall 2.4 first, just followed all the prompts to update), it said to restart computer to take effect. But when I restart computer I get microsoft window that says that comodo “… not a valid 32 bit application” and I have to click ‘ok’. Then after computer is restarted, Comodo firewall has disappeared, no longer listed under programs and no icon in tray. I had to do a system restore to get the old version back. Anyone have that problem or can tell me what is happening?

I too install the version 3 by way of the update link, following the prompts to update. Since I am not having the same problem I don’t think that it has anything to do with installing it by simply following the prompts to update. If this helps I am running Windows XP Professional on my PC.