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My NXT brick will not let motors run. When I download a program the motor will move forward and backward and then stop - sort of a wiggle. Another motor will not work at all. This happens for all three ports. Any suggestions.

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Does this happen for all the motors you have? The problem could be there. I've had a motor which only ran in one direction (it did kind of get tortured before that, admittedly), for example. In any case, the customer service should be able to help you. – Joubarc Apr 14 '12 at 18:57

Try putting a Wait block after the motor block. Set it to wait for 5 seconds.

I think your program just terminates after one block. Please post your program next time you have a mindstorms question.

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