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Old 04-02-2012, 10:39 AM
el biciclista el biciclista is offline
Join Date: Feb 2001
Posts: 513
Default Suddenly Pro Tools can't see the Native card

I suddenly started getting Error -55 errors. I finally got Pro Tools open (not sure what I did) and went Setup --> Playback Engine and the HD Native card is not listed. It shows 5 built-in options and Pro Tools Aggregate I/O.

When I go System Preferences --> Sound, sometimes I can see the Native card and sometimes I don't. Right now I can see it in both Input and Output.

Also, suddenly my Digital I/O boxes aren't recognizing the clocking input from my Lavry Gold A/D unit. They have switched to Internal clocking.

(As an aside, I started using the application Final Cut Pro X this week, and I am guessing that it is possibly causing the problem, since it accesses the Native card via Core Audio when it is running. This shouldn't be a problem, but............)

Anyway, ignoring Final Cut Pro for a moment, what do I do to get Pro Tools to see my Native card?

I a running Pro Tools 9.0.3 HD Native on Mac Pro 8 core dual 2.4, OS 10.6.8.

I have uninstalled Pro Tools, reinstalled 9.0 from my install disk, and then downloaded the 9.0.3 Updater. This didn't solve the problem.
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