ssh problem

I create my ssh keys by using Git Bash.exe and i copy the ssh
file ,and ssh public keys file from my document and past them in
authorized_keys folder in ssh folder in the config folder

i use deprec and capistrano to depoly my rails application
but when i write " cap deprec:ssh:setup_keys " and then give
the ssh public key (
this message display
                                      " Could not find ssh public
key(s) for user mahmoud

                                          Please create file
containing ssh public keys in:

authorized_keys/ "

how can i solve this problem?