Change subject line
Many times after attempting a second post to a thread have got this error message
"You already have a follow-up listed with the same subject. If you didn't see your message listed, you probably need to reload the page.
If you want to submit another follow-up to the same message, please change the subject line."
Which although it makes no sense to me I have always successfully addressed by changing its title and resubmitting. But last time I still got the same error message so was unable to post further to that thread. Is the title not the subject line