Logic Pro - Managing Plugins

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logic pro iconLogic Pro uses the Mac only format known as "Audio Units" to host 3rd party plugin effects and instruments. This guide provides an overview of the Audio Units Manager and some common troubleshooting.



  1. Audio Units Manager Overview
  2. Disable Failed Audio Units
  3. Reset and Rescan Selection
  4. Plugins Showing "Failed Validation"
  5. Troubleshooting Plugins Not Found in the AU Manager
  6. Warranty and Technical Support Information


Audio Units Manager Overview

Logic Pro organizes a list of all detected or enabled plugins in one place, called the Audio Units Manager. To access this in Logic Pro, from the top menu, navigate to Logic Pro>Preferences>Audio Units Manager.


Logic Pro AUManagerWindow


The Audio Units Manager can organize your plugins alphabetically by product name or brand name. There are two columns that are important when ensuring that all of your plugins are installed and activated successfully.

  • Logic - The check boxes in this column will determine if a plugin will be available to use in Logic. You can choose to manually disable plugins by un-checking the boxes. If a plugin is encountering difficulty being "validated" by Logic, it will revert to un-checked automatically.
  • Compatibility - This column will display one of the following messages:
    • Successfully Validated - The plugin is available to use in Logic.
    • Not Yet Validated - AU validation has not been run yet. This is not common, as most plugins will automatically validate when opening Logic for the first time after the plugin is installed.
    • Failed Validation - This is the most common for plugins that will not be available in Logic.

Logic Pro AUMenustandard


Disable Failed Audio Units

Some plugins that fail validation will not automatically un-check the Logic column box and will continue to scan every time Logic opens. If you are unable to resolve this issue and would like Logic to ignore the plugin, click Disable Failed Audio Units in the bottom left corner of the Audio Units Manager.

Reset & Rescan Selection

If you had encountered a problem with a plugin that required removing and reinstalling it, in most cases clicking the Reset & Rescan Selection button will allow this re-installation to take effect without having to reboot Logic.

Plugins showing "Failed Validation"

Failed Validation message in the Compatibility column is often the result of a plugin that is either not compatible, or needs to be reinstalled. The check box in the Logic column of the Audio Units Manager will be unchecked for all failed plugins. Re-checking the box on a failed plugin will re-initiate the validation process. The picture below shows a typical validation window. If this validation results in a failure, it would be best to attempt to reinstall the software or consult with the software developer.


Logic Pro AUValidation


Troubleshooting Plugins Not Found in the AU Manager

The most frequent difficulty experienced with newly installed plugins is that they do not appear on the AU Manager list at all. Here are two troubleshooting steps that may help.

  1. Locate the plugin manually at Macintosh HD>Application Support>Audio>Plugins>Components. All Audio Units plugins will end with the extension .component and will have an icon as shown below:

    Logic Pro AUIcon

    If you do not see the a component file with the name of your plugin, try to reinstall or search your hard drive. Logic does not allow alternate directories to store plugin files, so all plugins must be in this directory.

  2. Many plugins are developed in 32 bit and 64 bit formats. However, some are only compatible with 32 bit programs. Logic Pro can run in both 32 bit and 64 bit modes. If Logic is running in 32 bit mode, all 64 bit plugins will not appear. You can check which mode Logic is booting in but right-clicking the Logic Pro icon and selecting "Get Info":

    Logic Pro GetInfo32bit

    Here you will see a check box for Open in 32-Bit Mode. Check or un-check this depending on which formats your plugin supports.

    Logic Pro GetInfoMenu


Warranty and Technical Support Information

Whether you are a customer or dealer, if you already own an M-Audio product, or if you just have pre-sales questions, the M-Audio technical support team is available to help!

Visit the link below to connect with any of the following support options: online community support, phone support, email support.

M-Audio Support Contact






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