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Just updated to macOS 10.15.2 (final release) and Xcode 11.3 (final release), and have the exact same problem. Xcode crashes instantly after clicking the Next button on the first dialog when trying to create a new app, and crashes instantly when trying to open an existing app.Does anyone know how the **** I go about communicating to Apple that their flagship IDE is seriously broken?I'm beyond frustrated at this point. Seriously, Apple... :-(

Just upgraded my iMac to Catalina 10.15.2 beta 4, vainly hoping that, perhaps, macOS was to blame. Alas, though... Xcode 11.2.1 and 11.3 beta still both crash instantly after hitting the Next button while trying to create a new app. Really, really need a fixed Xcode from Apple...

One last note—I notice that AppCode is unable to build, with BuildService seemingly running into the same crash (IDEEmbeddedProvisioningProfile initWithProfileRef:error:). If there are any Apple engineers reading this, please take a serious look at this thread and provide a fix asap. At this point I can do zero development—well, zero Apple development. Perhaps it's time to learn Kotlin...?

Digging further tonight, I'm able to launch Xcode (11.2.1 or 11.3 beta) and have it remain running as long as I don't:- Attempt to create a new project- Attempt to open an existing project (deleting xcuserdata makes no difference)- Attempt to show the Accounts tab in preferences.The moment I click on Accounts tab in preferences, Xcode will reliably crash. Crash logs (of which I have very many now) all show the same issue (shown below). Seeing the stack trace I wondered if creating new development certs for my Apple Dev ID would help, so I recreated Dev certs for both macOS and iOS and imported into Keychain Access, and deleted the old certs. Firing up Xcode and attempting any of the above 3 items causes a crash.At this point I'm giving up. Perhaps someone at Apple will see this thread and care to investigate (?).=======================================================Process: Xcode [64359]Path: /Applications/Xcode-beta.app/Contents/MacOS/XcodeIdentifier: XcodeVersion: 11.3 (15710)Build Info: IDEFrameworks-15710000000000000~27 (11C24b)Code Type: X86-64 (Native)Parent Process: ??? [1]Responsible: Xcode [64359]User ID: 501Date/Time: 2019-11-14 18:24:10.554 -0500OS Version: Mac OS X 10.15.2 (19C39d)Report Version: 12Anonymous UUID: 6A75EC4C-D487-36D3-BA06-BC76DC164C9BTime Awake Since Boot: 68000 secondsSystem Integrity Protection: enabledCrashed Thread: 4 Dispatch queue: com.apple.root.user-interactive-qosException Type: EXC_BAD_ACCESS (SIGBUS)Exception Codes: KERN_MEMORY_ERROR at 0x0000000135fc6000Exception Note: EXC_CORPSE_NOTIFYTermination Signal: Bus error: 10Termination Reason: Namespace SIGNAL, Code 0xaTerminating Process: exc handler [64359]VM Regions Near 0x135fc6000: mapped file 0000000135fc3000-0000000135fc6000 [ 12K] r--/rw- SM=COW --> mapped file 0000000135fc6000-0000000135fc9000 [ 12K] r--/rw- SM=COW mapped file 0000000135fc9000-0000000135fcc000 [ 12K] r--/rw- SM=COW Application Specific Information:com.apple.main-threadProductBuildVersion: 11C24bThread 4 Crashed:: Dispatch queue: com.apple.root.user-interactive-qos0 libsystem_platform.dylib 0x00007fff657f77e9 _platform_memmove$VARIANT$Haswell + 1691 libcrypto.35.dylib 0x00007fff62c6e269 mem_read + 852 libcrypto.35.dylib 0x00007fff62c6aa52 BIO_read + 1003 libcrypto.35.dylib 0x00007fff62c51335 asn1_d2i_read_bio + 1624 libcrypto.35.dylib 0x00007fff62c516a3 ASN1_item_d2i_bio + 555 com.apple.mobiledevice 0x0000000121be6ec5 MISCryptoVerifyCMSSignature + 906 com.apple.mobiledevice 0x0000000121be6fa7 MISCryptoCopyAttachedDataFromCMSSignature + 257 com.apple.mobiledevice 0x0000000121be482c _MISProfileLoadPayload + 618 com.apple.mobiledevice 0x0000000121be4e06 MISProfileGetValue + 189 com.apple.dt.IDE.IDEiOSSupportCore 0x00000001219c3d6a -[IDEEmbeddedProvisioningProfile initWithProfileRef:error:] + 5410 com.apple.dt.IDE.IDEiOSSupportCore 0x0000000121996861 -[IDEEmbeddedProvisioningProfileProvider provisioningProfileFromData:error:] + 12111 com.apple.dt.IDE.IDEiOSSupportCore 0x0000000121996ad1 -[IDEEmbeddedProvisioningProfileProvider provisioningProfileFromFilePath:error:] + 19912 com.apple.dt.DVTFoundation 0x0000000108d5284d -[DVTProvisioningProfileSource _profileWithPath:error:] + 17913 com.apple.dt.DVTFoundation 0x0000000108d522d4 __55-[DVTProvisioningProfileSource _profilesFromFilePaths:]_block_invoke + 8614 com.apple.dt.DVTFoundation 0x0000000108de1c8b __DVTDispatchApply_block_invoke_2.61 + 1815 com.apple.dt.DVTFoundation 0x0000000108ddee8a __DVT_CALLING_CLIENT_BLOCK__ + 716 com.apple.dt.DVTFoundation 0x0000000108de1b07 __DVTDispatchApply_block_invoke + 114317 libdispatch.dylib 0x00007fff655a8543 _dispatch_client_callout2 + 818 libdispatch.dylib 0x00007fff655b8439 _dispatch_apply_invoke + 15719 libdispatch.dylib 0x00007fff655a850e _dispatch_client_callout + 820 libdispatch.dylib 0x00007fff655b6933 _dispatch_root_queue_drain + 66321 libdispatch.dylib 0x00007fff655b6f22 _dispatch_worker_thread2 + 9222 libsystem_pthread.dylib 0x00007fff658026b6 _pthread_wqthread + 22023 libsystem_pthread.dylib 0x00007fff65801827 start_wqthread + 15

" Tried Xcode 11.3 beta tonight, running on the latest Catalina beta (10.15.2 Developer Beta 2), and Xcode still crashes a split second after clicking the Next button after selecting project type when trying to create a project. Interestingly the stack trace line "0 libsystem_platform.dylib 0x00007fff71f1bda9 _platform_memmove$VARIANT$Haswell + 169" makes it look as though some memmove optimization (?) in Catalina might be at fault here. Just guessing. Anyway, short story is that Xcode is totally useless at this point... sure would like a fix from Apple.Same symptoms as before:Process: Xcode [76554]Path: /Applications/Xcode-beta.app/Contents/MacOS/XcodeIdentifier: XcodeVersion: 11.3 (15710)Build Info: IDEFrameworks-15710000000000000~27 (11C24b)Code Type: X86-64 (Native)Parent Process: ??? [1]Responsible: Xcode [76554]User ID: 501Date/Time: 2019-11-13 22:49:09.338 -0500OS Version: Mac OS X 10.15.2 (19C32e)Report Version: 12Anonymous UUID: 6A75EC4C-D487-36D3-BA06-BC76DC164C9BTime Awake Since Boot: 43000 secondsSystem Integrity Protection: enabledCrashed Thread: 2 Dispatch queue: com.apple.root.user-interactive-qosException Type: EXC_BAD_ACCESS (SIGBUS)Exception Codes: KERN_MEMORY_ERROR at 0x0000000139e5c000Exception Note: EXC_CORPSE_NOTIFYTermination Signal: Bus error: 10Termination Reason: Namespace SIGNAL, Code 0xaTerminating Process: exc handler [76554]VM Regions Near 0x139e5c000: mapped file 0000000139e5a000-0000000139e5c000 [ 8K] r--/rw- SM=COW --> mapped file 0000000139e5c000-0000000139e5f000 [ 12K] r--/rw- SM=COW mapped file 0000000139e5f000-0000000139e62000 [ 12K] r--/rw- SM=COW Application Specific Information:Sending goNextOrFinish: to IDEAssistantWindowController from <NSButton: 0x7feb99c8bb00>ProductBuildVersion: 11C24bPerforming @selector(goNextOrFinish:) from sender NSButton 0x7feb99c8bb00...Thread 2 Crashed:: Dispatch queue: com.apple.root.user-interactive-qos0 libsystem_platform.dylib 0x00007fff71f1bda9 _platform_memmove$VARIANT$Haswell + 1691 libcrypto.35.dylib 0x00007fff6f396269 mem_read + 852 libcrypto.35.dylib 0x00007fff6f392a52 BIO_read + 1003 libcrypto.35.dylib 0x00007fff6f379335 asn1_d2i_read_bio + 1624 libcrypto.35.dylib 0x00007fff6f3796a3 ASN1_item_d2i_bio + 555 com.apple.mobiledevice 0x0000000124b20ec5 MISCryptoVerifyCMSSignature + 906 com.apple.mobiledevice 0x0000000124b20fa7 MISCryptoCopyAttachedDataFromCMSSignature + 257 com.apple.mobiledevice 0x0000000124b1e82c _MISProfileLoadPayload + 618 com.apple.mobiledevice 0x0000000124b1ee06 MISProfileGetValue + 189 com.apple.dt.IDE.IDEiOSSupportCore 0x00000001248fdd6a -[IDEEmbeddedProvisioningProfile initWithProfileRef:error:] + 5410 com.apple.dt.IDE.IDEiOSSupportCore 0x00000001248d0861 -[IDEEmbeddedProvisioningProfileProvider provisioningProfileFromData:error:] + 12111 com.apple.dt.IDE.IDEiOSSupportCore 0x00000001248d0ad1 -[IDEEmbeddedProvisioningProfileProvider provisioningProfileFromFilePath:error:] + 19912 com.apple.dt.DVTFoundation 0x000000010bc1f84d -[DVTProvisioningProfileSource _profileWithPath:error:] + 17913 com.apple.dt.DVTFoundation 0x000000010bc1f2d4 __55-[DVTProvisioningProfileSource _profilesFromFilePaths:]_block_invoke + 8614 com.apple.dt.DVTFoundation 0x000000010bcaec8b __DVTDispatchApply_block_invoke_2.61 + 1815 com.apple.dt.DVTFoundation 0x000000010bcabe8a __DVT_CALLING_CLIENT_BLOCK__ + 716 com.apple.dt.DVTFoundation 0x000000010bcaeb07 __DVTDispatchApply_block_invoke + 114317 libdispatch.dylib 0x00007fff71ccd543 _dispatch_client_callout2 + 818 libdispatch.dylib 0x00007fff71cdd439 _dispatch_apply_invoke + 15719 libdispatch.dylib 0x00007fff71ccd50e _dispatch_client_callout + 820 libdispatch.dylib 0x00007fff71cdb933 _dispatch_root_queue_drain + 66321 libdispatch.dylib 0x00007fff71cdbf22 _dispatch_worker_thread2 + 9222 libsystem_pthread.dylib 0x00007fff71f26536 _pthread_wqthread + 22023 libsystem_pthread.dylib 0x00007fff71f263db start_wqthread + 15

Deleting the contents of xcuserdata folder within the workspace folder only works if Xcode actually gets past creating a project / workspace in the first place. In my case, Xcode is crashing immediately each time I try to create a project—that is, never gets as far as creating the workspace and project folder on disk.

Same problem for me. Xcode 11.2.1 (on Catalina latest GA build) crashes immediately after opening a project, or trying to create a new project. Crashes occur only on my iMac, and not (for some weird reason) on my MacBook (which has the identical versions of Catalina and Xcode). Tried uninstalling completely, rebooting, disabling all Xcode extensions, etc. etc. to no avail.(Truncated) Crash log is below (showing details of thread 10, which is the culprit here):Process: Xcode [72506]Path: /Applications/Xcode.app/Contents/MacOS/XcodeIdentifier: com.apple.dt.XcodeVersion: 11.2.1 (15526.1)Build Info: IDEFrameworks-15526001000000000~2 (11B53)Code Type: X86-64 (Native)Parent Process: ??? [1]Responsible: Xcode [72506]User ID: 501Date/Time: 2019-11-07 16:43:20.141 -0500OS Version: Mac OS X 10.15.1 (19B88)Report Version: 12Anonymous UUID: 6A75EC4C-D487-36D3-BA06-BC76DC164C9BTime Awake Since Boot: 81000 secondsSystem Integrity Protection: enabledCrashed Thread: 10 Dispatch queue: com.apple.root.user-interactive-qosException Type: EXC_BAD_ACCESS (SIGBUS)Exception Codes: KERN_MEMORY_ERROR at 0x0000000127eba000Exception Note: EXC_CORPSE_NOTIFYTermination Signal: Bus error: 10Termination Reason: Namespace SIGNAL, Code 0xaTerminating Process: exc handler [72506]VM Regions Near 0x127eba000: mapped file 0000000127eb8000-0000000127eba000 [ 8K] r--/rw- SM=COW --> mapped file 0000000127eba000-0000000127ebd000 [ 12K] r--/rw- SM=COW mapped file 0000000127ebd000-0000000127ec0000 [ 12K] r--/rw- SM=COW Application Specific Information:Sending goNextOrFinish: to IDEAssistantWindowController from <NSButton: 0x7fc42b177f20>ProductBuildVersion: 11B53Performing @selector(goNextOrFinish:) from sender NSButton 0x7fc42b177f20Thread 10 Crashed:: Dispatch queue: com.apple.root.user-interactive-qos0 libsystem_platform.dylib 0x00007fff734b2da9 _platform_memmove$VARIANT$Haswell + 1691 libcrypto.35.dylib 0x00007fff70932269 mem_read + 852 libcrypto.35.dylib 0x00007fff7092ea52 BIO_read + 1003 libcrypto.35.dylib 0x00007fff70915335 asn1_d2i_read_bio + 1624 libcrypto.35.dylib 0x00007fff709156a3 ASN1_item_d2i_bio + 555 com.apple.mobiledevice 0x00007fff61ffefc5 MISCryptoVerifyCMSSignature + 906 com.apple.mobiledevice 0x00007fff61fff0a7 MISCryptoCopyAttachedDataFromCMSSignature + 257 com.apple.mobiledevice 0x00007fff61ffc92c _MISProfileLoadPayload + 618 com.apple.mobiledevice 0x00007fff61ffcf06 MISProfileGetValue + 189 com.apple.dt.IDE.IDEiOSSupportCore 0x000000011e98ed6a -[IDEEmbeddedProvisioningProfile initWithProfileRef:error:] + 5410 com.apple.dt.IDE.IDEiOSSupportCore 0x000000011e961861 -[IDEEmbeddedProvisioningProfileProvider provisioningProfileFromData:error:] + 12111 com.apple.dt.IDE.IDEiOSSupportCore 0x000000011e961ad1 -[IDEEmbeddedProvisioningProfileProvider provisioningProfileFromFilePath:error:] + 19912 com.apple.dt.DVTFoundation 0x0000000105df7d7d -[DVTProvisioningProfileSource _profileWithPath:error:] + 17913 com.apple.dt.DVTFoundation 0x0000000105df7804 __55-[DVTProvisioningProfileSource _profilesFromFilePaths:]_block_invoke + 8614 com.apple.dt.DVTFoundation 0x0000000105e871cf __DVTDispatchApply_block_invoke_3 + 1815 com.apple.dt.DVTFoundation 0x0000000105e843ba __DVT_CALLING_CLIENT_BLOCK__ + 716 com.apple.dt.DVTFoundation 0x0000000105e86c73 __DVTDispatchApply_block_invoke + 17917 libdispatch.dylib 0x00007fff73264543 _dispatch_client_callout2 + 818 libdispatch.dylib 0x00007fff73274ee2 _dispatch_apply_invoke_and_wait + 15719 libdispatch.dylib 0x00007fff73274a35 dispatch_apply_f + 76120 com.apple.dt.DVTFoundation 0x0000000105e86b8a DVTDispatchApply + 16621 com.apple.dt.DVTFoundation 0x0000000105df7739 -[DVTProvisioningProfileSource _profilesFromFilePaths:] + 37122 com.apple.dt.DVTFoundation 0x0000000105df7b51 -[DVTProvisioningProfileSource _profilesFromSearchPath:] + 37023 com.apple.dt.DVTFoundation 0x0000000105df72f3 __58-[DVTProvisioningProfileSource _fetchProvisioningProfiles]_block_invoke + 28624 libdispatch.dylib 0x00007fff7326450e _dispatch_client_callout + 825 libdispatch.dylib 0x00007fff73270567 _dispatch_lane_barrier_sync_invoke_and_complete + 6026 com.apple.dt.DVTFoundation 0x0000000105e86650 DVTDispatchBarrierSync + 20827 com.apple.dt.DVTFoundation 0x0000000105e5da78 -[DVTDispatchLock performLockedBlock:] + 6428 com.apple.dt.DVTFoundation 0x0000000105df707c -[DVTProvisioningProfileSource _fetchProvisioningProfiles] + 16629 com.apple.dt.DVTFoundation 0x0000000105df68bb __55-[DVTProvisioningProfileSource allProvisioningProfiles]_block_invoke + 2630 com.apple.dt.DVTFoundation 0x0000000105c71a59 ___DVTPreventInvalidationForObjectAllowingRecursiveCallsDuringBlock_block_invoke_2 + 7531 libdispatch.dylib 0x00007fff7326450e _dispatch_client_callout + 832 libdispatch.dylib 0x00007fff73270a72 _dispatch_sync_invoke_and_complete + 6033 com.apple.dt.DVTFoundation 0x0000000105c719df ___DVTPreventInvalidationForObjectAllowingRecursiveCallsDuringBlock_block_invoke + 15434 libdispatch.dylib 0x00007fff7326450e _dispatch_client_callout + 835 libdispatch.dylib 0x00007fff73270a72 _dispatch_sync_invoke_and_complete + 6036 com.apple.dt.DVTFoundation 0x0000000105c71660 _DVTPreventInvalidationForObjectAllowingRecursiveCallsDuringBlock + 38237 com.apple.dt.DVTFoundation 0x0000000105c71cfb DVTPreventInvalidationDuringBlock + 3238 com.apple.dt.DVTFoundation 0x0000000105df6825 -[DVTProvisioningProfileSource allProvisioningProfiles] + 13339 com.apple.dt.DVTFoundation 0x0000000105d018c6 -[DVTProvisioningProfileManager forceProfileLoadingWithCallback:] + 30240 com.apple.dt.DVTFoundation 0x0000000105d01791 __48-[DVTProvisioningProfileManager initWithSource:]_block_invoke_2 + 4941 com.apple.dt.DVTFoundation 0x0000000105e843ba __DVT_CALLING_CLIENT_BLOCK__ + 742 com.apple.dt.DVTFoundation 0x0000000105e85a92 __DVTDispatchAsync_block_invoke + 80943 libdispatch.dylib 0x00007fff73263583 _dispatch_call_block_and_release + 1244 libdispatch.dylib 0x00007fff7326450e _dispatch_client_callout + 845 libdispatch.dylib 0x00007fff732666c0 _dispatch_continuation_pop + 41446 libdispatch.dylib 0x00007fff73265dbe _dispatch_async_redirect_invoke + 70347 libdispatch.dylib 0x00007fff732727e2 _dispatch_root_queue_drain + 32648 libdispatch.dylib 0x00007fff73272f22 _dispatch_worker_thread2 + 9249 libsystem_pthread.dylib 0x00007fff734bd6d5 _pthread_wqthread + 22050 libsystem_pthread.dylib 0x00007fff734bd57b start_wqthread + 15