一本小心安装了logic studio的升级包，结果悲剧的用了很多方法确解都无效，折腾阿 ，最后终于平了。

1、先删除相关的软件包

Application Files
/Applications/Compressor
/Applications/Logic Node
/Applications/Logic Pro
/Applications/MainStage
/Applications/Soundtrack Pro
/Applications/WaveBurner
/Applications/Utilities/Apple Loops Utility
/Applications/Utilities/Impulse Response Utility

Factory Settings, Instruments
/Library/Application Support/Logic/
/Library/Application Support/Garageband/
/Library/Application Support/Garageband Content/ (Legacy)
/Library/Application Support/Soundtrack Pro/
/Library/Application Support/WaveBurner/

Impulse Responses
/Library/Audio/Impulse Responses/

Receipts
Receipts can vary quite a bit depending on your system. Try to find all those that look like the following:
/Library/Receipts/AudioContentforSoundtrackProXX.pkg
/Library/Receipts/CompressorXX.pkg
/Library/Receipts/EXS24SamplerLibrarySamples.pkg
/Library/Receipts/EXS24SamplerLibraryStudio.pkg
/Library/Receipts/GarageBandXX.pkg
/Library/Receipts/ImpulseData.pkg
/Library/Receipts/ImpulseResponseUtility.pkg
/Library/Receipts/JamPackXX.pkg
/Library/Receipts/LogicXX.pkg
/Library/Receipts/MainStageXX.pkg
/Library/Receipts/RemixToolsXX.pkg
/Library/Receipts/RhythmSectionXX.pkg
/Library/Receipts/SharedLogicStudioHelpFiles.pkg
/Library/Receipts/SoundtrackProXX.pkg
/Library/Receipts/UltrabeatXX.pkg
/Library/Receipts/WaveburnerXX.pkg

User Preferences:
~/Library/Preferences/com.apple.logic.pro.plist
~/Library/Preferences/com.apple.logic.pro.cs
~/Library/Preferences/Logic/ (Legacy preferences)

License
/Library/Application Support/ProApps/Logic Studio System ID

Apple Loops
/Library/Audio/Apple Loops/Apple/Apple Loops for GarageBand/
/Library/Audio/Apple Loops/Apple/Apple Loops for Soundtrack Pro/
/Library/Audio/Apple Loops/Apple/iLife Sound Effects/
/Library/Audio/Apple Loops/Apple/Jam Pack 1/
/Library/Audio/Apple Loops/Apple/Jam Pack Remix Tools/
/Library/Audio/Apple Loops/Apple/Jam Pack Rhythm Section/
/Library/Audio/Apple Loops/Apple/Jam Pack Symphony Orchestra/
/Library/Audio/Apple Loops/Apple/Jam Pack World Music/
/Library/Audio/Apple Loops Index/

二、清除系统对安装的软件包的包的历吏记录(/Library/Receipts/InstallHistory.plist)

sudo pkgutil –forget com.apple.pkg.LogicNode
sudo pkgutil –forget com.apple.pkg.LogicPro
sudo pkgutil –forget com.apple.pkg.LogicProContent
sudo pkgutil –forget com.apple.pkg.LogicStudioCoreContent
sudo pkgutil –forget com.apple.pkg.LogicStudioDemoSongs
sudo pkgutil –forget com.apple.pkg.LogicStudioLegacyContent
sudo pkgutil –forget com.apple.pkg.LogicStudioMisc
sudo pkgutil –forget com.apple.pkg.LogicStudioSurroundSpaceDesignerFiles
sudo pkgutil –forget com.apple.pkg.MainStage
sudo pkgutil –forget com.apple.pkg.MainStageContent
sudo pkgutil –forget com.apple.pkg.AudioContentforSoundtrackPro1A
sudo pkgutil –forget com.apple.pkg.AudioContentforSoundtrackPro1B
sudo pkgutil –forget com.apple.pkg.AudioContentforSoundtrackPro1C
sudo pkgutil –forget com.apple.pkg.AudioContentforSoundtrackPro2A
sudo pkgutil –forget com.apple.pkg.AudioContentforSoundtrackPro2B
sudo pkgutil –forget com.apple.pkg.AudioContentforSoundtrackPro3
sudo pkgutil –forget com.apple.pkg.AudioContentforSoundtrackPro5A
sudo pkgutil –forget com.apple.pkg.AudioContentforSoundtrackPro5B
sudo pkgutil –forget com.apple.pkg.AudioContentforSoundtrackPro7
sudo pkgutil –forget com.apple.pkg.SoundtrackPro
sudo pkgutil –forget com.apple.pkg.SoundtrackProHelp
sudo pkgutil –forget com.apple.pkg.SoundtrackProSupport
sudo pkgutil –forget com.apple.pkg.SoundtrackProSurroundSpaceDesignerPreSets
sudo pkgutil –forget com.apple.pkg.WaveBurner
sudo pkgutil –forget com.apple.pkg.WaveBurnerContent
sudo pkgutil –forget com.apple.pkg.GarageBand
sudo pkgutil –forget com.apple.pkg.GarageBand_Instruments
sudo pkgutil –forget com.apple.pkg.GarageBand_Loops
sudo pkgutil –forget com.apple.pkg.GarageBand_LTPContent
sudo pkgutil –forget com.apple.pkg.GarageBand_MagicContent
sudo pkgutil –forget com.apple.pkg.GarageBandFactoryContent
sudo pkgutil –forget com.apple.pkg.AppleLoopsUtility
sudo pkgutil –forget com.apple.pkg.JamPackOneInstruments
sudo pkgutil –forget com.apple.pkg.JamPackOneLoopsALAC
sudo pkgutil –forget com.apple.pkg.JamPackOnePro
sudo pkgutil –forget com.apple.pkg.JamPackOneProSurround
sudo pkgutil –forget com.apple.pkg.JamPackOrchestralProSurround
sudo pkgutil –forget com.apple.pkg.JamPackOrchestralInstruments
sudo pkgutil –forget com.apple.pkg.JamPackRemixToolsLoopsALAC
sudo pkgutil –forget com.apple.pkg.JamPackRemixToolsPro
sudo pkgutil –forget com.apple.pkg.JamPackRemixToolsProSurround
sudo pkgutil –forget com.apple.pkg.JamPackVoicesInstruments
sudo pkgutil –forget com.apple.pkg.JamPackVoicesLoopsALAC
sudo pkgutil –forget com.apple.pkg.JamPackVoicesPro
sudo pkgutil –forget com.apple.pkg.JamPackWorldMusicInstruments
sudo pkgutil –forget com.apple.pkg.JamPackWorldMusicLoopsALAC
sudo pkgutil –forget com.apple.pkg.JamPackWorldMusicPro
sudo pkgutil –forget com.apple.pkg.JamPackWorldMusicProSurround
sudo pkgutil –forget com.apple.pkg.JamPackOrchestralLoopsALAC
sudo pkgutil –forget com.apple.pkg.JamPackOrchestralPro
sudo pkgutil –forget com.apple.pkg.JamPackRemixToolsInstruments
sudo pkgutil –forget com.apple.pkg.JamPackRhythmSectionInstruments
sudo pkgutil –forget com.apple.pkg.JamPackRhythmSectionLoopsALAC
sudo pkgutil –forget com.apple.pkg.JamPackRhythmSectionPro
sudo pkgutil –forget com.apple.pkg.JamPackRhythmSectionProSurround
sudo pkgutil –forget com.apple.pkg.ImpulseResponseUtility

参 考这里

http://www.macosxaudio.com/forums/viewtopic.php?t=45428