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Old 08-02-2021, 08:35 PM
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Top Jimmy Top Jimmy is offline
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Location: Spokane, WA
Posts: 5,772
Default Re: Pro Tools requires the DSP mixer plugin in the plugins folder!!!!!!

Originally Posted by MFred View Post
Hi !

I have the exact same issue and I've done everything you said

( Clean Reinstall, Launch Protools pressing the "N" key and choose " HDX" playback engine, even reinstall Moutain Lion + Protools on another drive )

Nothing works !!!

Protools is still asking for this DSP Mixer Plug and close...

IDK what to do

If anyone has an idea ?


Pro Tools used to install all 4 versions of the mixer with the ones not used in the unused plugins folder. Check the unused plugins folder and if they’re all there, move the one you want to the plugins folder.

Macintosh HD > Library > Application Support > Digidesign > Plug-Ins (RTAS & TDM)

Macintosh HD > Library > Application Support > Avid > Audio > Plug-Ins (AAX)
James Cadwallader

Mac Studio, 64GB RAM, 1 TB SSD, Glyph 2TB USB3 HDD, OWC drive dock, Mac OS Monterey 12.6.2

Pro Tools Ultimate 2022.12, HD Native, Focusrite Red 8Pre

Presonus Faderport, Pro Tools | Control
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Old 08-03-2021, 01:06 AM
MFred MFred is offline
Join Date: Aug 2021
Location: Paris
Posts: 2
Default Re: Pro Tools requires the DSP mixer plugin in the plugins folder!!!!!!

Hi James ! Thank you for your reply

I’ve already moved the Stereomixer.dpm from the unused plug-ins folder to the plug-in folder in the Digidesign Application support
The Mixer.aax was already in the plug-ins folder in the Avid Application support.
It still doesn’t work and Protools still requires the DSP mixer plug-in...

I have to mention that when the mixer.aax and the stereomixer.dpm are in their plug-in folders, I also have a dae error -13811

It is very strange because I’ve never experienced this issue before and everything was working perfectly a few days ago
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Old 08-03-2021, 01:30 AM
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JFreak JFreak is online now
Join Date: Jan 2003
Location: Tampere, Finland
Posts: 23,752
Default Re: Pro Tools requires the DSP mixer plugin in the plugins folder!!!!!!

Hi, welcome to the community.

First make sure your setup is a supported configuration, then delete everything from the plugins folder and install again. After installation, confirm that you have the mixer plugin in there (that is the HDX mixer) and relaunch PT.
What we do in life, echoes in eternity.
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Old 10-23-2021, 07:48 AM
chriscasswillmakeyoujump chriscasswillmakeyoujump is offline
Join Date: Oct 2021
Location: Ireland
Posts: 1
Default Re: Pro Tools requires the DSP mixer plugin in the plugins folder!!!!!!

Hi MFred,

Did you ever figure this out?

I am also getting this, I have tried everything I can read on the subject installed/uninstalled, installed new OS, moved the plugin into the folder, Did the start up N & tried various versionsof PT still nothing.....
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