- In your address bar, type "about:config" (remember, no quotes). You’ll receive a warning box that says anything you do here might void your warranty. Click the button that says you’ll promise to behave.
- Once the configuration page loads, right click anywhere within the configuration options list and select "New" and then select "Boolean" from the 3 choices given (Boolean is a "true" or "false" type statement for those that don’t know).
- The next box that pops will ask you to "Enter the preference name". Enter the following statement: "extensions.checkCompatibility".
- Another box will pop up asking you to choose the Boolean value. Select "False": You’re new statement should now appear in the list of configuration options.
- Restart your browser and you can try out those extensions you’ve been wanting.
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Firefox 3 beta 3: Disabling Extension Compatibility Check | Just Thinkin'
Note: Incorporating this workaround only disables the compatibility check however, it does not mean that all your desired extensions will actually work. It only means that you’ll be able to install them. If you find that an incompatible extension renders Firefox 3 B3 unusable just open Firefox in "Safe Mode" and uninstall the offending extension.
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