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Unhandled exception value cannot be null. Parameter name: handler

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    Unhandled exception value cannot be null. Parameter name: handler

    Hello Support

    Sometimes when moving the crosshair over a chart in my workspace I recieve the following popup error "Unhandled exception value cannot be null. Parameter name: handler"

    They popup like "rapid fire" ......sometimes possibly about 100? I have to exit them by clicking the "X" on the popup multiple times. Sometimes there are too many so I have to exit Ninjatrader and restart.

    This time it happened while using Market Replay

    What does this error mean/suggest?

    Log and trace files sent via NT

    See attached screenshot


    Appreciate the assistance
    Attached Files

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