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If all goes well I'll report back on what solved the problem, if the problem persists I'll let you know there is more to be tested. The Presonus is at a different location and I can't test your proposals immediately, but I will within the next few days. This led me to believe that the sequence proposed by CSeye is worth a try.
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With a new project this always works well, but sometimes with an existing project the Presonus is already indicated in the device window and I do not get the normal options to select the input for each channel. Of course, I do check the core audio devises and, if I can, I indicate the Presonus as the input device. First, Eli your analysis is exactly on target. CSeye and Eli your responses are most welcome.
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