Installing delicious bookmarks extension in Firefox 4 RC

(Update 4th May: The recent Firefox 4.0.1 update has caused issues with my original workaround, Ive now made changes below so that the plugin continues working even after future updates)

I’m now using Firefox 4 RC as my main browser; it’s stable, fast and the UI changes feel like a big step forward. I haven’t had much problem getting my addons working but the delicious bookmarking extension didn’t want to play ball. I use it on a daily basis (check out my last few bookmarks over on the right hand sidebar) so this was a real dealbreaker for me.

After a bit of searching on Google I couldn’t find a simple tutorial so I thought I’d put this one together and help out anybody else looking for a solution to this problem. Please note, this is for OSX but the process will be very similar on Windows too. I’m also assuming you have upgraded from FF 3.6 and already had the delicious extension installed. If not you might need to download/install it before taking the following steps.

  1. From the menus select Help > Troubleshooting information
  2. On this new tab, near the top, you’ll see a field called Profile Directory. Click the button in the field to launch Finder (File Explorer for Windows).
  3. In the window which has popped up navigate to the extensions folder. Inside that should be another folder named “{2fa4ed95–0317–4c6a-a74c–5f3e3912c1f9}”. Inside this is a file called install.rdf
  4. Open install.rdf in any plain text editor.
  5. Around line 8 you should see some XML which looks like this: em:maxVersion="4.0b3pre" />
  6. Update this to em:maxVersion="5.0" /> (See we changed “4.0b3pre” to “5.0”)
  7. Save the file and restart Firefox.
  8. Boom. The delicious extension will now work.

The toolbar icons look a little funky and don’t fit the new UI in FF4 but apart from that it seems to work perfectly and should keep you going until delicious release their own update for FF4.

James Moss

I’m a freelance full-stack engineer with over 15 years experience. Currently taking on new React based opportunities, drop me a line 👋

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