Please help- I have firefox 3, and have tried various greasemonkey versions compatible with it from https://addons.mozilla.org/en-US/firefox/addon/greasemonkey/versions/. I tried the oldest greasemonkey compatible with firefox 3, the newest, and several in between. Greasemonkey installs but every time I try to install a script, I get "Script could not be installed TypeError: lines is null". What does this MEAN?? All scripts do it, on all versions of greasemonkey. I am NOT going to upgrade my browser, and the versions I have are ALL compatible with firefox 3. Please help!