"Pro Tools is unable to establish communication with the HUI" error when...

"Pro Tools is unable to establish communication with the HUI" error when using a Motor Mix with Pro Tools 5.0.

In 5.0,the Motor Mix needs to be set up as an input device in the MIDI menu. One symptom that this is not setup correctly is that moving faders on the Pro Tools mix window will move the Motor Mix faders but you will not get the reverse.

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