Kinect for Windows V2 Gesture Exception

Hi
When i delete Discrete gesture builder
db in WPF and imported my own new db then it will through and exception.This API has returned an exception from an HRESULT: 0x80004005

It was exception in Visual Gesture Database string;
I remove the readonly in the Visual Gesture Database string.
private string gestureDatabase = @"Database\HandsUpState.gbd";
// Working
private readonly string gestureDatabase = @"Database\HandsUpState.gbd";

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    https://social.msdn.microsoft.com/Forums/en-US/92b23946-53d2-419c-8624-66e6c390617f/information-to-start-project-with-kinect-for-windows-v2?forum=kinectv2sdk
    Thanks for your understanding.
    Best Regards,
    We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place.
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