Have run into this problem a couple of times recently, have composed ad, and attempt to attach pic, (through "Browse,"). Had message "file too large." Back up and re-size pic, then use "Browse" function again, when I click submit I get a message that post has already been submitted. Go out and back into website but post has not been submitted. Is is required to re-name/re-compose post once it has "failed" submission/
Thanks for the help.
Yes thats right, you need to also rename the pic if submission fails.