MacOS – How to fix a hanging Logic Pro 9.1.5 on Snow Leopard

It looks like you have a bad Audio Unit plugin installed.

Specifically the BT Analog Chorus CH2S-3 plugin from Nomad Factory. The Nomad Factory FAQ suggests the following procedure if one of their plugins is crashing Logic:

Please follow the steps below to resolve current issues:

1. Download our latest installer from our downloads page.

2. Double-Click the "uninstall_AU.command" included in the "Support OpenMe/Uninstall Your Software" folder to remove the installed plug-ins.

3. Double-Click the "backup_licenses.command" included in the "Support OpenMe/Backup Your Licenses" folder, the Nomad Factory folder will be renamed to "Nomad Factory Backup", Presets and Licenses will be saved.

4. When ready, run the installer. This will create a new Nomad Factory folder including the Licenses and Plug-In Settings folders with the correct permissions settings. (You can now drag any backed up licenses/presets from the backup folder directly into the newly created folders)

   • The Backup folder can be found here : /Library/Application Support/Nomad Factory Backup
   • The new created Nomad Factory folder can be found here : /Library/Application Support/Nomad Factory

After moving your saved licenses, launch your host application and it should work. You can now delete the Nomad Factory Backup folder.

If that doesn't work try removing this plugin from Macintosh HD/Library/Audio/Plug-Ins/Components and then starting Logic. You don't need to delete the file, just grab it and move it some place else like your Desktop. The file should be named something like Macintosh HD/Library/Audio/Plug-Ins/Components/BT Analog Chorus CH2S-3.component. As far as Logic is concerned, if there's no .component file in a sub-directory of Macintosh HD/Library/Audio/Plug-Ins/Components then the plugin doesn't exist and it doesn't get loaded on boot up of Logic.

If removing the file from the Components directory solves the problem then you've definitely pinpointed the issue. You can try and re-install your Nomad Factory BT Analog Chorus CH2S-3 plugin from the media you got when you purchased it and see if that fixes the problem. If that doesn't help, contact Nomad Factory support and let them know about your issues and that you tried their repair procedure already.

One more thing to try: Boot in Safe mode holding the Shift key at the startup sound. If the internal drive is bad (failed drive or borked OS), this won't work.

If you have an external drive as a full bootable backup (and I hope you do), connect it a power it up. Then try booting the Mac holding the Option key, and select the external drive.

If you have another Mac, connect the sick Mac to it and boot the sick Mac in Target mode (hold the "t" at startup sound).

If either works, copy all critical data to the drive you are booted in.

I agree that there is at least one hardware failure involved.