Registering XPCOM in firefox. Unknown CID

I'm having difficulties registering an example XPCOM component into firefox from this example here: http://www.iosart.com/firefox/xpcom/ I'm trying this on Firefox 3.6. After successfully building and transferring the XPT and library into the components folder in firefox, and following what instructions are applicable, I'm unable to get the components successfully registered.

Solution

See the first bullet point here. This method of adding components to Firefox no longer works in Firefox 3.6.

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