ssh-keygen invalid file type won't upload id_rsa.pub (BB-3452)

ubuntu 9.10
openssh5.1

ssh-keygen --> produces id_rsa.pub file
attempted to paste key -->failed to accept in account on bitbucket.org

attempted to upload file, states invalid filetype.

please advise.

attemtped ssh-keygen -t rsa
attemtped ssh-keygen -t dsa

or ssh-keygen -C "blah " (adding that whitespace?) as mentioned earlier, still no success