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Avid Pro Tools 9 CoreAudio Bug Problem! February 15, 2011

Posted by ConnorSmith in : Avid, Pro Tools, Troubleshooting , trackback

EDIT: Problem solved – see bottom of the article.

Get the DEET out – we’ve got a bug.

I found this bug yesterday… I haven’t gotten a response back from Avid on a patch to fix it, but I have confirmed that other people are having the same problem.  Luckily, I’ve also figured out a workaround.  I’ve confirmed this bug on Apple Snow Leopard OSX 10.6.6 with Core Audio, but apparently it’s happening across all versions.  I’m not sure on Windows XP or Windows 7 based systems, but I’ll update this post if I get more information. 

So, the bug:


As of now, my fix is to trash your databases and preferences (a restart usually won’t do it).  I haven’t confirmed this happening across all systems, but I have seen it happening with TDM, HD Native, and native setups.

I’ll keep you posted!

Update: I’ve opened up an ASC call/email thread with Avid Tech Support.  No solution yet, but they are working on it.  Additionally, (not worth a whole post, so I’ll talk about it here) anyone having a problem with the release knob on the Bomb Factory MC77 plug-in (where it doesn’t recall correctly when you open a session, even though the GUI looks correct) – they are looking into this too.

Update 2 (The Fix):  Problem solved.  Apparently this problem is attributed to some corrupt preference files that don’t go away when you normally trash preferences.  The way to fix it is to make a new administrative user (System Preferences > Accounts > Add a new user).  It worked great for me – just make sure you give that user Read/Write permissions on all your hard drives.  Regarding the MC77 release knob problem, this is a known bug that they are working on.  Let’s hope they fix it soon – it’s a pain!


The Studio Files


1. Dan Reese - July 12, 2012

I have Pro Tools 9 running directly into a PC, Dell Inspiron, running Windows 7 and an Mbox 2 as the AI. I’ve used this set up at home a number of times now without problem, but I took it on the road and set it up exactly as I had at home and received an error message that read, “Cannot locate hardware…” Couldn’t get Pro Tools to work at all. I use an iLok, as well. What hardware is it looking for and not finding? How do I get Pro Tools to work again in this environment?

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