Re: How do I enable extension installation?

In article <walterwego-2854A2.10111719112005@[EMAIL PROTECTED]
>, Matt
Broughton <walterwego@[EMAIL PROTECTED]
> wrote:

> In article <191120050935098567%cmn-nospam@[EMAIL PROTECTED]
>,
>  Mark Nobles <cmn-nospam@[EMAIL PROTECTED]
> wrote:
> 
> > I am unable to find a preference that allows me to
> > install extensions. There is a bug here, if nothing else in the error
> > message.
> 
> Preferences-->Web Features-->Allow Web Sites to Install Software.  Make 
> sure the checkbox is checked.  You may have to edit the Allowed Sites.  
> I did not have to edit this option, however.

Boggle. When I open the Preferences panel, my choices are:
General, Privacy, Content, Tabs, Downloads, Advanced.
None of those has anything about either Web Features or 
Allow Web Sites to Install Software.
This is getting curiouser and curiouser.