Daddio, I've got the same problem. The number displayed on the Play button for me is 4. I can move between Dandoran and Er'Kit, but that's all.
Shelendil, I've tried going through the Planetary Command. Doing so doesn't automatically trigger the 701 error, however trying to relocate to a world does.
I've sent an email to the developers. Their reply was to say that this is "a strange thing to be experiencing", and asked for screen shots of the error and my game info, as well as info about my devices.
Hopefully they will have a fix out for this soon.
Leader of SITH_COMMANDOS squad.
Head of the SITH Ruling Council.