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It looks like that error code is just a download error- the only thing I can suggest is unplugging your wifi router for a bit and turning off your 3DS, and then give it another try.
And as a heads up, Pokemon General doesn't deal with technical questions like these. If you've got a question about X/Y, use their Quick Q&A thread. Otherwise, try either our Video Games or Technology & Internet boards' Q&A threads for issues like this one.