Assuming this is coming from the end of the compile log when it tries to copy the BSP, it means the BSP was never generated because you have a fatal error in the VBSP process that you should be looked for in the log.
Yeah it did but then I resaved it with a different name, but it still happened. Bah, it doesn't matter now I restarted the map since I was only ten minutes in and it's all good now. Thanks though.
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