Cardputer ADV Noobie

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Hi Guys.
Just received the ADV. Played around. Tried Doom. Doom stuck in home screen. No Keyboard entering worked.
Then earased it and downloaded UIFlow2.0 Cardputer-Adv which also stuck in start screen (can only press enter) nothing else. Just beeping.
Then tried to download Cardputer-Adv User Demo.

It then gives me (with any other app as well) this: "A serial exception error occurred: Could not configure port: (6, 'Device not configured')"

What did I crash? How to fix this?

THANKS for any help!!!