Xcode-beta will damage your computer. You should move it to the trash.

I upgraded to El Capitan beta 2, and then downloaded Xcode 7 beta 2. When I try to open Xcode, I get the error "Xcode-beta will damage your computer. You should move it to the Trash.":



I've downloaded Xcode 7 beta 2 twice now. I've also tried going into the bundle and opening Contents / Mac OS / Xcode, but after a long dialog, that announces that it's not from a known developer.


Any ideas?

Replies

Screenshot of above: https://pbs.twimg.com/media/CITTgKGUcAABY8a.png

I seem to have worked around it for the moment by setting System Preferences > Security & Privacy > General to allow apps from anywhere, then open the Xcode 7b2 bundle, navigate down to Contents > Mac OS > Xcode (command-line executable) and run that, which does the usual "need to install components" dance. We'll see if this is still working tomorrow.

Same issue here. I'm unable to get it past Verifiying "Xcode-beta.app"

Same here.


“Xcode-beta” will damage your computer. You should move it to the Trash.
Safari downloaded this file yesterday at 12:32 from adcdownload.apple.com.


I had to force quit the first time verify was running, because of excessive errors pouring to Console:


14/07/15 00:29:02,815 CoreServicesUIAgent[10059]: error -1 while setting quarantine data


The message was repeating about 250 times a second for minutes. My iMac was unable to proceed.


Checksum for my copy of the package (dmg) is:

❯ md5 Xcode_7_beta_3.dmg
MD5 (Xcode_7_beta_3.dmg) = 610cf45abeb348af71917db717f4b09c


-Pete

This is what I get when running the Xcode excutable:

;

$ /Applications/Xcode-beta.app/Contents/MacOS/Xcode ; exit;
2015-07-16 10:51:37.617 Xcode[6175:115692] [MT] PluginLoading: Required plug-in compatibility UUID AABB7188-E14E-4433-AD3B-5CD791EAD9A3 for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/KSImageNamed.xcplugin' not present in DVTPlugInCompatibilityUUIDs
2015-07-16 10:51:37.618 Xcode[6175:115692] [MT] PluginLoading: Required plug-in compatibility UUID AABB7188-E14E-4433-AD3B-5CD791EAD9A3 for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/CocoaPods.xcplugin' not present in DVTPlugInCompatibilityUUIDs
2015-07-16 10:51:37.619 Xcode[6175:115692] [MT] PluginLoading: Required plug-in compatibility UUID AABB7188-E14E-4433-AD3B-5CD791EAD9A3 for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/BBUFullIssueNavigator.xcplugin' not present in DVTPlugInCompatibilityUUIDs
2015-07-16 10:51:37.620 Xcode[6175:115692] [MT] PluginLoading: Required plug-in compatibility UUID AABB7188-E14E-4433-AD3B-5CD791EAD9A3 for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/Alcatraz.xcplugin' not present in DVTPlugInCompatibilityUUIDs
2015-07-16 10:51:37.783 Xcode[6175:115692] ### Failed to load Addressbook class CNContactNameFormatter
2015-07-16 10:51:38.245 Xcode[6175:115696]  DeveloperPortal: Using pre-existing current store at URL (file:/
2015-07-16 10:51:38.332 Xcode[6175:115696] 10:51:38.329 WARNING:  140: This application, or a library it uses, is using the deprecated Carbon Component Manager for hosting Audio Units. Support for this will be removed in a future release. Also, this makes the host incompatible with version 3 audio units. Please transition to the API's in AudioComponent.h.
2015-07-16 10:51:43.900 Xcode[6175:115692] [MT] DVTAssertions: Warning in /Library/Caches/com.apple.xbs/Sources/IDEFrameworks/IDEFrameworks-8163.8/IDEKit/Application/IDEDocumentController.m:2526
Details:  Returning nil for fileExtensionsFromType: com.apple.dt.interfacebuilder.document
typeStatus: 0
Object:   <IDEDocumentController: 0x7f9b72e48600>
Method:   -fileExtensionsFromType:
Thread:   <NSThread: 0x7f9b72c175f0>{number = 1, name = main}
Please file a bug at http:/
2015-07-16 10:51:43.900 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.dt.interfacebuilder.document". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.901 Xcode[6175:115692] [MT] DVTAssertions: Warning in /Library/Caches/com.apple.xbs/Sources/IDEFrameworks/IDEFrameworks-8163.8/IDEKit/Application/IDEDocumentController.m:2526
Details:  Returning nil for fileExtensionsFromType: com.apple.dt.MiscDebugGaugesCore.NetworkIOReportDataType
typeStatus: 0
Object:   <IDEDocumentController: 0x7f9b72e48600>
Method:   -fileExtensionsFromType:
Thread:   <NSThread: 0x7f9b72c175f0>{number = 1, name = main}
Please file a bug at http:/
2015-07-16 10:51:43.901 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.dt.MiscDebugGaugesCore.NetworkIOReportDataType". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.902 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.dt.IDE.GaugeEnergyContentType". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.903 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.InterfaceBuilder3.Cocoa.Preview". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.903 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.InterfaceBuilder3.CocoaTouch.Preview". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.904 Xcode[6175:115692] [MT] DVTAssertions: Warning in /Library/Caches/com.apple.xbs/Sources/IDEFrameworks/IDEFrameworks-8163.8/IDEKit/Application/IDEDocumentController.m:2526
Details:  Returning nil for fileExtensionsFromType: com.apple.dt.toybox
typeStatus: 0
Object:   <IDEDocumentController: 0x7f9b72e48600>
Method:   -fileExtensionsFromType:
Thread:   <NSThread: 0x7f9b72c175f0>{number = 1, name = main}
Please file a bug at http:/
2015-07-16 10:51:43.904 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.dt.toybox". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.906 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.dt.IDE.iCloudActivityContentType". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.907 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.dt.IDE.GaugeMemoryContentType". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.908 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.InterfaceBuilder2.Cocoa.NIB". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.909 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.gputools.gputrace.resources". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.910 Xcode[6175:115692] [MT] DVTAssertions: Warning in /Library/Caches/com.apple.xbs/Sources/IDEFrameworks/IDEFrameworks-8163.8/IDEKit/Application/IDEDocumentController.m:2526
Details:  Returning nil for fileExtensionsFromType: com.apple.dt.IDE.XCSBotLogContentType
typeStatus: 0
Object:   <IDEDocumentController: 0x7f9b72e48600>
Method:   -fileExtensionsFromType:
Thread:   <NSThread: 0x7f9b72c175f0>{number = 1, name = main}
Please file a bug at http:/
2015-07-16 10:51:43.910 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.dt.IDE.XCSBotLogContentType". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.911 Xcode[6175:115692] [MT] DVTAssertions: Warning in /Library/Caches/com.apple.xbs/Sources/IDEFrameworks/IDEFrameworks-8163.8/IDEKit/Application/IDEDocumentController.m:2526
Details:  Returning nil for fileExtensionsFromType: com.apple.dt.IDE.XCSIntegrationLogContentType
typeStatus: 0
Object:   <IDEDocumentController: 0x7f9b72e48600>
Method:   -fileExtensionsFromType:
Thread:   <NSThread: 0x7f9b72c175f0>{number = 1, name = main}
Please file a bug at http:/
2015-07-16 10:51:43.911 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.dt.IDE.XCSIntegrationLogContentType". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.912 Xcode[6175:115692] [MT] DVTAssertions: Warning in /Library/Caches/com.apple.xbs/Sources/IDEFrameworks/IDEFrameworks-8163.8/IDEKit/Application/IDEDocumentController.m:2526
Details:  Returning nil for fileExtensionsFromType: com.apple.dt.IDE.XCSServiceLogContentType
typeStatus: 0
Object:   <IDEDocumentController: 0x7f9b72e48600>
Method:   -fileExtensionsFromType:
Thread:   <NSThread: 0x7f9b72c175f0>{number = 1, name = main}
Please file a bug at http:/
2015-07-16 10:51:43.912 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.dt.IDE.XCSServiceLogContentType". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.913 Xcode[6175:115692] [MT] DVTAssertions: Warning in /Library/Caches/com.apple.xbs/Sources/IDEFrameworks/IDEFrameworks-8163.8/IDEKit/Application/IDEDocumentController.m:2526
Details:  Returning nil for fileExtensionsFromType: com.apple.dt.MiscDebugGaugesCore.EnergyReportDataType
typeStatus: 0
Object:   <IDEDocumentController: 0x7f9b72e48600>
Method:   -fileExtensionsFromType:
Thread:   <NSThread: 0x7f9b72c175f0>{number = 1, name = main}
Please file a bug at http:/
2015-07-16 10:51:43.913 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.dt.MiscDebugGaugesCore.EnergyReportDataType". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.913 Xcode[6175:115692] [MT] DVTAssertions: Warning in /Library/Caches/com.apple.xbs/Sources/IDEFrameworks/IDEFrameworks-8163.8/IDEKit/Application/IDEDocumentController.m:2526
Details:  Returning nil for fileExtensionsFromType: com.apple.scenekit.shadableobject
typeStatus: 0
Object:   <IDEDocumentController: 0x7f9b72e48600>
Method:   -fileExtensionsFromType:
Thread:   <NSThread: 0x7f9b72c175f0>{number = 1, name = main}
Please file a bug at http:/
2015-07-16 10:51:43.913 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.scenekit.shadableobject". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.914 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.dt.IDE.GPUDebuggerLogContentType". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.915 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.dt.IDE.ViewDebuggerContentType". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.916 Xcode[6175:115692] [MT] DVTAssertions: Warning in /Library/Caches/com.apple.xbs/Sources/IDEFrameworks/IDEFrameworks-8163.8/IDEKit/Application/IDEDocumentController.m:2526
Details:  Returning nil for fileExtensionsFromType: com.apple.dt.IDE.XCSLegacyBotLogContentType
typeStatus: 0
Object:   <IDEDocumentController: 0x7f9b72e48600>
Method:   -fileExtensionsFromType:
Thread:   <NSThread: 0x7f9b72c175f0>{number = 1, name = main}
Please file a bug at http:/
2015-07-16 10:51:43.916 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.dt.IDE.XCSLegacyBotLogContentType". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.917 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.dt.IDE.DebuggerLogContentType". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.917 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.dt.IDE.GaugeCPUContentType". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.918 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.dt.IDE.GPUReportContentType". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.919 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.dt.IDE.MemoryBrowserContentType". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.919 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.dt.IDE.BuildLogContentType". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:43.920 Xcode[6175:115692] [MT] DVTAssertions: Warning in /Library/Caches/com.apple.xbs/Sources/IDEFrameworks/IDEFrameworks-8163.8/IDEKit/Application/IDEDocumentController.m:2526
Details:  Returning nil for fileExtensionsFromType: com.apple.dt.MiscDebugGaugesCore.FileIOReportDataType
typeStatus: 0
Object:   <IDEDocumentController: 0x7f9b72e48600>
Method:   -fileExtensionsFromType:
Thread:   <NSThread: 0x7f9b72c175f0>{number = 1, name = main}
Please file a bug at http:/
2015-07-16 10:51:43.920 Xcode[6175:115692] An NSDocumentController returned nil when sent -fileExtensionsFromType:@"com.apple.dt.MiscDebugGaugesCore.FileIOReportDataType". See the info about new support for UTIs in the Leopard AppKit release notes.
2015-07-16 10:51:44.066 Xcode[6175:115718] [QL] file:/
2015-07-16 10:51:48.122 Xcode[6175:115692] [MT] DVTAssertions: ASSERTION FAILURE in /Library/Caches/com.apple.xbs/Sources/IDEFrameworks/IDEFrameworks-8163.8/IDEFoundation/SourceControl/Model/IDESourceControlTree.m:82
Details:  (location) should not be nil.
Object:   <IDESourceControlRepository: 0x7f9b789abe00>
Method:   -_initWithLocation:sourceControlManager:
Thread:   <NSThread: 0x7f9b72c175f0>{number = 1, name = main}
Hints:   None
2015-07-16 10:51:48.660 Xcode[6175:115692] [MT] DVTAssertions:
Backtrace:
  0  0x00000001033a40f7 -[IDEAssertionHandler handleFailureInMethod:object:fileName:lineNumber:assertionSignature:messageFormat:arguments:] (in IDEKit)
  1  0x0000000101fae7f2 _DVTAssertionHandler (in DVTFoundation)
  2  0x0000000101faea09 _DVTAssertionFailureHandler (in DVTFoundation)
  3  0x0000000102981daf -[IDESourceControlTree _initWithLocation:sourceControlManager:] (in IDEFoundation)
  4  0x0000000102981b1e -[IDESourceControlRepository _initWithLocation:sourceControlManager:] (in IDEFoundation)
  5  0x00000001029f2fea -[IDESourceControlTree initWithLocation:sourceControlManager:] (in IDEFoundation)
  6  0x00000001029f2f9e -[IDESourceControlRepository initWithLocation:sourceControlManager:] (in IDEFoundation)
  7  0x0000000102c60753 __55-[IDESourceControlManager loadAccountsFromArray:error:]_block_invoke (in IDEFoundation)
  8  0x00007fff89bfcc11 _dispatch_client_callout (in libdispatch.dylib)
  9  0x00007fff89bfd6be _dispatch_barrier_sync_f_invoke (in libdispatch.dylib)
10  0x0000000101fe9370 DVTDispatchSync (in DVTFoundation)
11  0x0000000102c5ff73 -[IDESourceControlManager loadAccountsFromArray:error:] (in IDEFoundation)
12  0x0000000102c61d10 -[IDESourceControlManager loadAccounts] (in IDEFoundation)
13  0x0000000102c5ceab -[IDESourceControlManager initWithSavedAccounts:] (in IDEFoundation)
14  0x0000000102c5c5a9 __53+[IDESourceControlManager sharedSourceControlManager]_block_invoke (in IDEFoundation)
15  0x00007fff89bfcc11 _dispatch_client_callout (in libdispatch.dylib)
16  0x00007fff89bfcb09 dispatch_once_f (in libdispatch.dylib)
17  0x00000001029809cf +[IDESourceControlManager sharedSourceControlManager] (in IDEFoundation)
18  0x0000000102c95e62 -[IDEFileReference _updateSourceControlStatus] (in IDEFoundation)
19  0x0000000102962fec -[IDEFileReference _setContainer:] (in IDEFoundation)
20  0x0000000102961c97 -[IDEContainerItem _setSuperitem:] (in IDEFoundation)
21  0x0000000102b1b58e __25-[IDEGroup _setSubitems:]_block_invoke (in IDEFoundation)
22  0x0000000101f13896 __58-[DVTModelObjectGraph performBlockCoalescingModelChanges:]_block_invoke (in DVTFoundation)
23  0x0000000101f9f345 -[DVTModelGraphTransactionScope performTransaction:] (in DVTFoundation)
24  0x0000000101f137a1 -[DVTModelObjectGraph performBlockCoalescingModelChanges:] (in DVTFoundation)
25  0x0000000102962e67 -[IDEGroup _setSubitems:] (in IDEFoundation)
26  0x0000000102962cea -[IDEXMLPackageContainer didReadFromFilePath:error:] (in IDEFoundation)
27  0x0000000102cdc5d3 __46-[IDEContainer _didReadOperationWithFilePath:]_block_invoke (in IDEFoundation)
28  0x0000000101dd2370 -[DVTOperation main] (in DVTFoundation)
29  0x00000001029600c2 -[IDEContainer _readAsyncIfPossibleFromFilePath:error:] (in IDEFoundation)
30  0x0000000102cd998d -[IDEContainer initWithFilePath:extension:workspace:options:error:] (in IDEFoundation)
31  0x0000000102a7e3c8 -[IDEXMLPackageContainer initWithFilePath:extension:workspace:options:error:] (in IDEFoundation)
32  0x0000000102aa4ddb -[IDEWorkspace initWithFilePath:extension:workspace:options:error:] (in IDEFoundation)
33  0x0000000102cd928e __82+[IDEContainer _retainedContainerAtFilePath:fileDataType:workspace:options:error:]_block_invoke_2 (in IDEFoundation)
34  0x00007fff89bfcc11 _dispatch_client_callout (in libdispatch.dylib)
35  0x00007fff89bfd6be _dispatch_barrier_sync_f_invoke (in libdispatch.dylib)
36  0x0000000101fe9a65 DVTDispatchBarrierSync (in DVTFoundation)
37  0x0000000101d95a57 -[DVTDispatchLock performLockedBlock:] (in DVTFoundation)
38  0x0000000102cd8c65 __82+[IDEContainer _retainedContainerAtFilePath:fileDataType:workspace:options:error:]_block_invoke (in IDEFoundation)
39  0x0000000102cd8a0f +[IDEContainer _retainedContainerAtFilePath:fileDataType:workspace:options:error:] (in IDEFoundation)
40  0x000000010295b894 +[IDEContainer retainedContainerAtFilePath:fileDataType:workspace:error:] (in IDEFoundation)
41  0x000000010318831a -[IDEWorkspaceDocument _readFromURL:ofType:simpleFilesFocused:error:] (in IDEKit)
42  0x0000000103188145 -[IDEWorkspaceDocument readFromURL:ofType:error:] (in IDEKit)
43  0x00007fff8a07ebc2 -[NSDocument _initWithContentsOfURL:ofType:error:] (in AppKit)
44  0x00007fff8a07eaae -[NSDocument initWithContentsOfURL:ofType:error:] (in AppKit)
45  0x00000001031874e2 -[IDEDocumentController makeDocumentWithContentsOfURL:ofType:error:] (in IDEKit)
46  0x00007fff8a42a11f __97-[NSDocumentController makeDocumentWithContentsOfURL:alternateContents:ofType:completionHandler:]_block_invoke (in AppKit)
47  0x00007fff8a42a0bd -[NSDocumentController makeDocumentWithContentsOfURL:alternateContents:ofType:completionHandler:] (in AppKit)
48  0x00007fff8a1ed24c __80-[NSDocumentController openDocumentWithContentsOfURL:display:completionHandler:]_block_invoke (in AppKit)
49  0x00007fff8a42914c __144-[NSDocumentController _coordinateReadingAndGetAlternateContentsForOpeningDocumentAtURL:resolvingSymlinks:thenContinueOnMainThreadWithAccessor:]_block_invoke_2920 (in AppKit)
50  0x00007fff8a42905e __144-[NSDocumentController _coordinateReadingAndGetAlternateContentsForOpeningDocumentAtURL:resolvingSymlinks:thenContinueOnMainThreadWithAccessor:]_block_invoke919 (in AppKit)
51  0x00007fff8a428ec5 __144-[NSDocumentController _coordinateReadingAndGetAlternateContentsForOpeningDocumentAtURL:resolvingSymlinks:thenContinueOnMainThreadWithAccessor:]_block_invoke_3 (in AppKit)
52  0x00007fff9118d614 __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ (in CoreFoundation)
53  0x00007fff9117fbf5 __CFRunLoopDoBlocks (in CoreFoundation)
54  0x00007fff9117f3be __CFRunLoopRun (in CoreFoundation)
55  0x00007fff9117edc8 CFRunLoopRunSpecific (in CoreFoundation)
56  0x00007fff88bb9a59 RunCurrentEventLoopInMode (in HIToolbox)
57  0x00007fff88bb96f7 ReceiveNextEventCommon (in HIToolbox)
58  0x00007fff88bb962f _BlockUntilNextEventMatchingListInModeWithFilter (in HIToolbox)
59  0x00007fff89f5479c _DPSNextEvent (in AppKit)
60  0x00007fff8a3225c9 -[NSApplication _nextEventMatchingEventMask:untilDate:inMode:dequeue:] (in AppKit)
61  0x00000001025695fe -[DVTApplication nextEventMatchingMask:untilDate:inMode:dequeue:] (in DVTKit)
62  0x00007fff89f4a6dc -[NSApplication run] (in AppKit)
63  0x00007fff89eccb6d NSApplicationMain (in AppKit)
64  0x00007fff82b685ad start (in libdyld.dylib)
Abort trap: 6

logout

Same issue here... it's truly unbelievable!

1) remove xcode from applications folder (maybe not necessary)

2) remove everything from /Library/Developer

3) restart system (maybe not necessary)


Hope it helps.

If anyone is still hitting these issues with more recent versions of Xcode and OS X, please grab a sysdiagnose report and attach it to a new bug report (using the Report Bugs link at the bottom of this page). Thanks!

Yes, got it with 7.1 beta (filed 22676924)

Hey Joar,


Having the problem when trying to install Xcode 7.1 beta 2 onto OX 10.11 GM MB Air 2015. Get the following message,


"Xcode-beta will damage your computer. You should move it to the Trash.


Got a sysdiagnose report and filed a bug report (22834222) just now.

I am running the latest beta, and installing the latest beta of Xcode. I got the error, and this is what you must do:

  1. Move Xcode-beta.app to the trash.
  2. Go to /Library/Developer, and develop ALL files within the folder
  3. Restart your computer
  4. Move the app back to your applications
  5. Open the Xcode-beta.app. Do NOT cancel the verification process. It may take up to ten minutes.


Hope this helps! (Worked for me)