Xcode 9 Beta 2 fails - DVTPlugInErrorDomain plugin load fails - xcode9-beta

Question

After downloading from Apple's site and installing Xcode 9 beta 2, it fails to launch on Sierra OS X version 10.12.5 with a following bug report:
Process: Xcode [4789] Path:
/Applications/Xcode-beta.app/Contents/MacOS/Xcode Identifier:
com.apple.dt.Xcode Version: 9.0 (13158.29) Build Info:
IDEFrameworks-13158029000000000~6 Code Type: X86-64
(Native) Parent Process: ??? [1] Responsible: Xcode
[4789] User ID: 501
Date/Time: 2017-07-10 09:27:38.822 +0300 OS Version:
Mac OS X 10.12.5 (16F73) Report Version: 12 Anonymous UUID:
D8406E47-CD80-D96B-2976-599E84980DE2
Sleep/Wake UUID: A8F0AF0B-2FF1-45A9-89AD-505F25730705
Time Awake Since Boot: 20000 seconds Time Since Wake: 3800
seconds
System Integrity Protection: enabled
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_CRASH (SIGABRT) Exception Codes:
0x0000000000000000, 0x0000000000000000 Exception Note:
EXC_CORPSE_NOTIFY
Application Specific Information: ProductBuildVersion: 9M137d UNCAUGHT
EXCEPTION (NSInternalInconsistencyException): Error getting value for
parameter key 'name' of extension
'Xcode.InterfaceBuilderKit.PepperIntegration.Singletons' in plug-in
'com.apple.dt.IDE.IDEInterfaceBuilderWatchKitIntegration' UserInfo: {
NSUnderlyingError = "Error Domain=DVTPlugInErrorDomain Code=2 \"Loading a plug-in failed.\"
UserInfo={DVTPlugInIdentifierErrorKey=com.apple.dt.IDE.IDEInterfaceBuilderCocoaTouchIntegration,
DVTPlugInExecutablePathErrorKey=/Applications/Xcode-beta.app/Contents/PlugIns/IDEInterfaceBuilderCocoaTouchIntegration.framework/IDEInterfaceBuilderCocoaTouchIntegration,
NSLocalizedRecoverySuggestion=The plug-in or one of its prerequisite
plug-ins may be missing or damaged and may need to be reinstalled.,
DVTPlugInDYLDErrorMessageErrorKey=dlopen(/Applications/Xcode-beta.app/Contents/PlugIns/IDEInterfaceBuilderCocoaTouchIntegration.framework/IDEInterfaceBuilderCocoaTouchIntegration,
0): Library not loaded:
/Library/Developer/PrivateFrameworks/CoreSimulator.framework/Versions/A/CoreSimulator\n
Referenced from:
/Applications/Xcode-beta.app/Contents/Developer/Library/PrivateFrameworks/SimulatorKit.framework/Versions/A/SimulatorKit\n
Reason: image not found, NSLocalizedDescription=Loading a plug-in
failed.,
NSFilePath=/Applications/Xcode-beta.app/Contents/PlugIns/IDEInterfaceBuilderCocoaTouchIntegration.framework,
NSLocalizedFailureReason=The plug-in
\U201ccom.apple.dt.IDE.IDEInterfaceBuilderCocoaTouchIntegration\U201d
at path
\U201c/Applications/Xcode-beta.app/Contents/PlugIns/IDEInterfaceBuilderCocoaTouchIntegration.framework\U201d
could not be loaded. The plug-in or one of its prerequisite plug-ins
may be missing or damaged., NSUnderlyingError=0x7fc8df3cb340 {Error
Domain=NSCocoaErrorDomain Code=3587
\"dlopen_preflight(/Applications/Xcode-beta.app/Contents/PlugIns/IDEInterfaceBuilderCocoaTouchIntegration.framework/IDEInterfaceBuilderCocoaTouchIntegration):
Library not loaded:
/Library/Developer/PrivateFrameworks/CoreSimulator.framework/Versions/A/CoreSimulator\n
Referenced from:
/Applications/Xcode-beta.app/Contents/Developer/Library/PrivateFrameworks/SimulatorKit.framework/Versions/A/SimulatorKit\n
Reason: image not found\" UserInfo={NSLocalizedFailureReason=The
bundle is damaged or missing necessary resources.,
NSLocalizedRecoverySuggestion=Try reinstalling the bundle.,
NSFilePath=/Applications/Xcode-beta.app/Contents/PlugIns/IDEInterfaceBuilderCocoaTouchIntegration.framework/IDEInterfaceBuilderCocoaTouchIntegration,
NSDebugDescription=dlopen_preflight(/Applications/Xcode-beta.app/Contents/PlugIns/IDEInterfaceBuilderCocoaTouchIntegration.framework/IDEInterfaceBuilderCocoaTouchIntegration):
Library not loaded:
/Library/Developer/PrivateFrameworks/CoreSimulator.framework/Versions/A/CoreSimulator\n
Referenced from:
/Applications/Xcode-beta.app/Contents/Developer/Library/PrivateFrameworks/SimulatorKit.framework/Versions/A/SimulatorKit\n
Reason: image not found,
NSBundlePath=/Applications/Xcode-beta.app/Contents/PlugIns/IDEInterfaceBuilderCocoaTouchIntegration.framework,
NSLocalizedDescription=The bundle
\U201cIDEInterfaceBuilderCocoaTouchIntegration\U201d couldn\U2019t be
loaded because it is damaged or missing necessary resources.}}}"; }

Answer 1

I had the same issue. I have reinstalled XcodeSystemResources.pkg package. You will find it in here:
/Applications/Xcode.app/Contents/Resources/Packages/XcodeSys‌​temResources.pkg
The installer will recreate /Library/Developer/PrivateFrameworks folder with its content. After that Xcode 9 started working for me.