Question How do I un-install the PowerCore 2.0 software under Mac OS X

Answer The description below will list the necessary files installed by the PowerCore 2.x, so you will be able to remove them, for the purpose of either re-installing or be able to install an older PowerCore software version instead. To that end, it's not necessary to remove all PowerCore related files.
Disclaimer: WARNING: Removing system files is a critical operation which could cause data loss or render your operating system unusable or inoperable. Under no circumstances including negligence, shall TC Electronic be liable for any incidental, special or consequential damages that result from the use or inability to use the instructions below.
Removing the driver: The following files and folders need to be removed. Please note that for most of these, root privileges are required, meaning that you have to type in an administrator's password. Additionally, these files must not be in use, meaning that all PowerCores have to be (physically) removed from the system ! If you have a PCI-based PowerCore remove it from your Mac. If you have a FireWire-based PowerCore power it down and disconnect it from your Mac. /Applications/ /Library/Application Support/TCWorks/POWERCORE /Library/Application Support/TC Electronic/POWERCORE /Library/PreferencePanes/PowerCore.prefPane /Library/Preferences/PowerCore /System/Library/Extensions/PowerCore.kext
Removing the plug-ins: It is not necessary to remove any plug-ins in order to to be able to install an older PowerCore software. Additionally, special care must be taken to only delete the trial plug-ins that came with the PowerCore 2.0 installer rather than deleting optional plug-ins that may have been requestered / registered for your PowerCore. To determine whether an optional plug-in is a Trial plug-in, right-click on the file in the Finder (or control-click), choose 'Get Info' and check if the Version info contains the word "TRIAL". Files / Folders to delete: /Library/Audio/Plug-Ins/VST/PowerCore /Library/Audio/Plug-Ins/Components/VStation-Powercore.component /Library/Application Support/TC Electronic/Fabrik C /Library/Application Support/TC Electronic/Fabrik R
Removing the TCAU Audio Unit wrapper: It is not necessary to remove the TCAU wrapper to be able to install an older PowerCore software. However, if you wish to do so anyway, you may delete the following files / folders: /Applications/Utilities/TCAU /Library/Audio/Plug-Ins/Components/TCAU.component