I have a project where we have some Selenium tests. I have recently upgraded Firefox to 7.0.1 because it prompted me to and now the “WebDriver for Firefox” extension that these tests use is broken.

How can I fix this? Must I uninstall this current version of Firefox and install an older one? Or is there a file I can edit to tell it to ignore that the version is different?
An upgrade to Selenium webdriver to 2.8 would probably solve it.
http://web.archive.org/web/20120115040501/http://selenium.googlecode.com/svn/tags/selenium-2.8.0/rb/CHANGES
Unfortunately this has been the case for every Firefox upgrade since 5.0