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It was clearly started as a Mult-VST instance by me, but the log file seems to imply that the exchange between host and VST thinks it's a simple stereo instrument. I've posted the Log file from Aria instance being started in Protools - VEPro below. Moved the VST to the desktop to ensure that I only had one version of the plugin. Aria is the only device that does this so I suspect it isn't fully compliant as noldar12 mentioned in his post to me. The end result is that you can't assign 16 channels of output to correspond to the 16 separate instruments.
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The routing of the signals is complicated because the "effects" are always sent to output 1/2. I know that the multi version of ARIA behaves in a strange way.
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