bad time for testing, 3 lines parallel to each other/not crossing, how to fake json data?

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Can you try this one? When an error occurs, it'll hard-set the price at 0. https://www.dropbox.com/s/hbg3ctq2b9lmqar/MinerControl.7z?dl=0
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keeps mining:

http://postimg.org/image/qr4pp319v/

error log:

22.07.2015 г. 13:05:15 ч.
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Type: NullReferenceException
Message: Object reference not set to an instance of an object.
Stack trace:    at MinerControl.Services.YaampCloneService.ProcessPrices(Object jsonData)
   at MinerControl.Utility.WebUtil.DownloadJsonComplete(Object sender, DownloadStringCompletedEventArgs e)