Won't go to homepage using home button as once did or update browser window with site addresses

Was enjoying wyzo with the firebug add-on when a new version of firebug add-on was reported. I clicked "yes" to get the new version and when wyzo restarted, it only goes to the wyzo start page and no-where else even if I click on my home location. A manually typed webpage lets you go there but the browser window never changes afterward upon new pages or locations clicked on. I downloaded wyzo anew and re-installed and the problem persists.

Operating system is: System Version: Mac OS X 10.5.8 (9L30)
Kernel Version: Darwin 9.8.0

Wyzo version: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.0.9) Gecko/2009042318 Firefox/3.0.9 Wyzo/3.0.2