I'm unclear from your post -- are you getting the Cradlepoint message after you try and go to one of the unsecured Wifi portals? If so, George is exactly right and what you are seeing is someone's router (the Cradlepoint is a dsl/cable/broadband cellular router that has a Wifi antenna for a wireless LAN), and the router itself is not connected to a WAN source. That would be the error message it would give in such a situation.
If you have a Cradlepoint router that you're trying to access, you are successfully seeing the router, but since it is not hooked up to anything, you are getting the error message.
P.S. I have one of the Cradlepoint routers and they are really pretty slick, but they are best used with a cellular air card. Those, too, are pretty slick and much nicer than Wifi, so long as you are in range. We've pulled in broadband
as much as 10 miles off shore, with only a small antenna extended up the spreader. People say that with a better antenna and amplifier, they are pulling it in up to 20 miles, but the cost for that goes up a lot and wasn't worth it to us.