Weird problem with -m 400

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rejects are usually the result of incomaptible words in the dictionary. if the whole dictionary is rejected its mostly because of a bad newline seperator. for example, if the dictionary was stored on a mac which uses only \r as newline seperator then it will break completly. another thing to try is the driver. you should go back to ForceWare 275.33 everything past that driver is known to produce lots of problems with gpgpu.