@@ -1649,8 +1649,9 @@ class S3(object):

                     return self.send_file(request, stream, labels, buffer, throttle,

                                           retries - 1, offset, chunk_size, use_expect_continue)

                 else:

-                    warning("Too many failures. Giving up on '%s'" % (filename))

-                    raise S3UploadError

+                    warning("Too many failures. Giving up on '%s'" % filename)

+                    raise S3UploadError("Too many failures. Giving up on '%s'"

+                                        % filename)

             ## Non-recoverable error

             raise S3Error(response)

@@ -1666,7 +1667,8 @@ class S3(object):

                                       retries - 1, offset, chunk_size, use_expect_continue)

             else:

                 warning("Too many failures. Giving up on '%s'" % (filename))

-                raise S3UploadError

+                raise S3UploadError("Too many failures. Giving up on '%s'"

+                                    % filename)

         return response