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Mechanic master won't run because of a save data error.
The error reads: Data could not be accessed. Turn off the power and reinsert the DS card.
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The automatic savetype detection probably did not detect the correct savetype, and you have to set it manually to the correct type. If you are lucky, your game (and the corresponding savetype) can be found on a website such as http://www.advanscene.com/. And if youre not as lucky, youll just have to try them all out until you find the correct type.
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