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TDA4VM: vxCopyUserDataObject random error when ISS setup

Part Number: TDA4VM

Hello, experts,

          In our project, we have a random problem.

          It is seldom to happen. We repeated the test 30,000 times and it happen 1 once.

          When we start our app, the first step is initialize the cameras (ISS: Enumerating sensors ... !!!)

          When we start to enumerating the sensors, it shows " 9613.290081 s:  VX_ZONE_ERROR:[vxCopyUserDataObject:385] Invalid user data object reference "

          we have no idea,how to check this error how to position which object have problem?  Is appInitImageSensor will use  vxCopyUserDataObject function ?