follow-up: 8 hours later and the script is working again, with no changes to the script or Firefox in the meantime. Maybe this sort of behavior is well-known by others, but it is a mystery to me. (I'm happy to have the attachment reminder back--many attachments sent today.)

newbie Q: I added this script and was very happy with it. I edited the section that has the default check for "attach", and the prompt message "It appears that..", mainly just to 'see' the changes--since I thought the script was so cool. Now it doesn't work. Those were the only two edits I ever did. Did them in Wordpad. Never changed the default script name. I screwed around with with uninstalling and reinstalling the script an embarrassing number of times and can't get it going again. The installed script is identical to the download available here. Other scripts (e.g. conversation bubble), other extensions still fine. Removed and reinstalled Firefox. Any ideas? I really miss the cool attachment reminder.