Creator can not load QtHelp on Mac 10.6

    /Users/kdab/Qt5.0.0-rc1/Qt Creator.app/Contents/PlugIns/QtProject/libHelp.dylib: Cannot load library /Users/kdab/Qt5.0.0-rc1/Qt Creator.app/Contents/PlugIns/QtProject/libHelp.dylib: (dlopen(/Users/kdab/Qt5.0.0-rc1/Qt Creator.app/Contents/PlugIns/QtProject/libHelp.dylib, 5): Symbol not found: _kCFWebServicesProviderDefaultDisplayNameKey
      Referenced from: /Users/kdab/Qt5.0.0-rc1/Qt Creator.app/Contents/PlugIns/QtProject/../../Frameworks/QtWebKitWidgets.framework/Versions/5/QtWebKitWidgets
      Expected in: /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
     in /Users/kdab/Qt5.0.0-rc1/Qt Creator.app/Contents/PlugIns/QtProject/../../Frameworks/QtWebKitWidgets.framework/Versions/5/QtWebKitWidgets)

# otool -L libHelp.dylib
libHelp.dylib:
        @rpath/PlugIns/QtProject/libHelp.dylib (compatibility version 0.0.0, current version 0.0.0)
        @rpath/PlugIns/libAggregation.1.dylib (compatibility version 1.0.0, current version 1.0.0)
        @rpath/PlugIns/libExtensionSystem.1.dylib (compatibility version 1.0.0, current version 1.0.0)
        @rpath/PlugIns/libUtils.1.dylib (compatibility version 1.0.0, current version 1.0.0)
        @rpath/PlugIns/QtProject/libCore.dylib (compatibility version 0.0.0, current version 0.0.0)
        @rpath/PlugIns/QtProject/libFind.dylib (compatibility version 0.0.0, current version 0.0.0)
        @rpath/PlugIns/QtProject/libLocator.dylib (compatibility version 0.0.0, current version 0.0.0)
        @loader_path/../../Frameworks/QtWebKitWidgets.framework/Versions/5/QtWebKitWidgets (compatibility version 5.0.0, current version 5.0.0)
        @loader_path/../../Frameworks/QtWidgets.framework/Versions/5/QtWidgets (compatibility version 5.0.0, current version 5.0.0)
        @loader_path/../../Frameworks/QtGui.framework/Versions/5/QtGui (compatibility version 5.0.0, current version 5.0.0)
        @loader_path/../../Frameworks/QtCore.framework/Versions/5/QtCore (compatibility version 5.0.0, current version 5.0.0)
        @loader_path/../../Frameworks/QtNetwork.framework/Versions/5/QtNetwork (compatibility version 5.0.0, current version 5.0.0)
        @loader_path/../../Frameworks/QtHelp.framework/Versions/5/QtHelp (compatibility version 5.0.0, current version 5.0.0)
        @loader_path/../../Frameworks/QtPrintSupport.framework/Versions/5/QtPrintSupport (compatibility version 5.0.0, current version 5.0.0)
        /System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa (compatibility version 1.0.0, current version 17.0.0)
        @loader_path/../../Frameworks/QtConcurrent.framework/Versions/5/QtConcurrent (compatibility version 5.0.0, current version 5.0.0)
        /System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL (compatibility version 1.0.0, current version 1.0.0)
        /System/Library/Frameworks/AGL.framework/Versions/A/AGL (compatibility version 1.0.0, current version 1.0.0)
        /usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 52.0.0)
        /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 159.1.0)