***simplerblue: https://addons.mozilla.org/en-US/firefox/downloads/file/4079/simpler_blue-0.2-fx.jar (1.5x only)
***azurefox: https://addons.mozilla.org/en-US/firefox/downloads/file/12315/azurefox-0.96.1-fx.jar (1.5x and 2.0x compatible)
**When you check for updates you should get a warning within the Major Update Dialog window and a button to list the incompatible extensions. If you continue and restart you will get a dialog on startup prompting you to check if there are updates to those incompatible extensions.
**Select the option to check for extension updates and then for installation. Your extensions should be updated and Firefox 2.0.0.4 should start without a problem.