Cannot download comodo free on new laptop

I have a new sony vaio with windows 7/ I cannot download your free comodo firewall/virus protection. Keep getting an error message. I have 4 whatever of memory.what is worng?

What browser are you using to download Comodo?

Go here Free Firewall - Download the Best Firewall Protection and Anti-Virus Scan Software from Comodo make sure you choose the right option 32 or 64 Bit and click on download, what happens?