The first error means that the rsync process is not running. Please ensure rsync is installed, running, enabled, and configured as per the PBXSync detailed installation guide.
I suspect that you actually solved the first error, since the second error means that rsync is running! But, the second error means that the rsync.pbxsync.secret file has the wrong permissions. Please modify the permissions of this file as follows:
Quote:
chmod 600 /etc/ rsync.pbxsync.secret
After that your sync should work.