Failure to restart always WebCam
See Attachment
You might try restarting Unity and creating a new project and re-installing Vuforia to see if this fixes the issue. This behaviour is seen on OS X Snow Leopard, but it appears that you are running on Windows.
https://developer.vuforia.com/resources/dev-guide/step-1-installing-extension
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You might try restarting Unity and creating a new project and re-installing Vuforia to see if this fixes the issue. This behaviour is seen on OS X Snow Leopard, but it appears that you are running on Windows.
https://developer.vuforia.com/resources/dev-guide/step-1-installing-extension