I installed this extension two ways. On a PC with an old version of Live Writer Blog This installed I followed the instructions to update the install.rdf. On a PC without a previously installed version of Live Writer Blog This I installed the extension and updated the install.rdf. Nothing happened! I installed the Firefox Nightly Tester Tools add-on and the Blog This extension appeared when it restarted.
Gordon’s Tech: Make Firefox 3 beta accept the Windows Live Writer Blog This extension