[fsilberberg]

Permission denied suggests to me that /home/lvuser is no longer readable by the lvuser user (not sure what would have changed that, but that's what I would guess). I would suggest either ssh'ing into the RIO as admin and verifying the permissions on that folder, or simply reimaging the RIO if you want a simple solution.
As to the second issue, are you sure that your computer is connected to the RIO? Can you ping roborio-team-frc.local? The particular assertion that you're running into there are the tests to make sure that your computer can actually talk to the RIO.