Someone please help me! Comodo antivirus ver 439 wont update virus signatures

Can someone please help me? Every time I try and download the newest virus signature database, it goes to 5% and then says

“Failed to update the virus signature database. Please check your internet connection and try again later.”

I am running version 439 and the Virus signature database version is 994


Edit by EricJH: changed the all caps

Sorry the latest version is 3.13.126709.581 your version 3.5.57173.439 is some months out of date, I think 3.8 was released in Feb 2009 you should have had a program update notification then.

You will have to uninstall and install the latest version, you can download it from here;msg355806#msg355806