Wouldn't it make sense to ask this in the kfu thread and wait patiently for help? Or you could ask in the q & a forum. The development forum is for thread pettainkng to developing something for the kindle, such as a rom, kernel, or utility. In the future direction this to the right place and people will be much happier to help you.
Did you make sure you have su installed? You may be rooted, but without the su app so that you can give rooted apps permissions.
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