Comodo Start Up Page – Possible Fault

The Comodo “about:home” page’s Search facility isn’t working. Whenever I try this, and likewise on a family member’s computer who now also has IceDragon, whether clicking the Return tab or clicking “Search” directly, nothing happens.

Is this a technical fault or a setting that needs changing within IceDragon to correct this?

Windows Vista
32 bit
Windows Firewall
Windows Defender
AVG Anti Virus
Anti Spyware Blocker
TDSS Killer
Kaspersky Security Scan
Malwarebytes Anti Malware
Spyware Blaster