[I get an "unknown error" when I try and create my Linden home]

I get an "unknown error" when I try and create my Linden Home (the one that comes with the premium account). I created and abandoned a few times so I could see the layouts "in person" so to speak... but now I'm unable to get a place. I tried relogging. I've tried closing my browser and reopening and I've tried just waiting a day.

Help!