Thunderbrowse add-on

I thought this would be a handy item, but for some reason, at TB or TBP start up, I get warnings about the browser's security component is missing. Also, certain things Thunderbrowse tries to open fail, with a message that SSL is disabled or not present. I cannot locate a way to make SSL available in TB. This message also appears when trying to check mail in GMAIL, yet the gmail acct settings have SSL checked.

any thoughts?

thank you in advance.