Could not get identity count error during setup?

[jrsteensen]

Copying the ssh key to your backup server, type in your password if prompted
for @hanjin.dreamhost.com

WARNING: This will overwrite existing ssh keys on your backup user account.
Proceed? [y/n]: y
Password for @hanjin.dreamhost.com: *************
error: could not get identity count. Use --trace to view backtrace.