Editor crash on launch even after clean reinstall (mac)

Development Platform & Builds
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1

Error msg states cant find /Users/build/.../SharedPointer.h and indeed I dont have a /Users/build folder at all.

Somewhat fixed by installing a prior version of the engine (as I suddenly couldn’t get 4.25 to run anymore, I installed 4.24 and it works). That single version point difference doesn’t matter to me that much, and besides, I will be able to upgrade engine version later anyway, — but 4.25 still doesn’t work.

2

Editor wont start (empty editor, no project), not through launcher and not through app directly.

Error msg states cant find /Users/build/…/SharedPointer.h and indeed I dont have a /Users/build folder at all.

Tried:

  • verifying, reinstalling engine (twice), including launcher, with restarting computer
  • removed all files with cleaner tool
  • verified and updated xcode
  • removing, and then separately readding some engine options (build platforms, that kinda stuff)
  • deleting DerivedDataCache (Users>Shared>UnrealEngine>[Engine Version]>Engine>DerivedDataCache)

No luck.

How to fix? Thanks.

Full error msg:

Assertion failed: IsValid() [File:/Users/build/Build/++UE4+Licensee/Sync/Engine/Source/Runtime/Core/Public/Templates/SharedPointer.h] [Line: 890]

FGenericPlatformMisc::RaiseException(unsigned int) Address = 0x10a136797 (filename not found) [in UE4Editor-Core.dylib]
FMacErrorOutputDevice::Serialize(char16_t const*, ELogVerbosity::Type, FName const&) Address = 0x10a2cda33 (filename not found) [in UE4Editor-Core.dylib]
FOutputDevice::LogfImpl(char16_t const*, ...) Address = 0x10a3b25e9 (filename not found) [in UE4Editor-Core.dylib]
AssertFailedImplV(char const*, char const*, int, char16_t const*, __va_list_tag*) Address = 0x10a3325fe (filename not found) [in UE4Editor-Core.dylib]
FDebug::CheckVerifyFailedImpl(char const*, char const*, int, char16_t const*, ...) Address = 0x10a332494 (filename not found) [in UE4Editor-Core.dylib]
FInputBindingManager::CreateInputCommand(TSharedRef<FBindingContext, (ESPMode)0> const&, TSharedRef<FUICommandInfo, (ESPMode)0>) Address = 0x112d7f980 (filename not found) [in UE4Editor-Slate.dylib]
FUICommandInfo::MakeCommandInfo(TSharedRef<FBindingContext, (ESPMode)0> const&, TSharedPtr<FUICommandInfo, (ESPMode)0>&, FName, FText const&, FText const&, FSlateIcon const&, EUserInterfaceActionType, FInputChord const&, FInputChord const&) Address = 0x112d764ab (filename not found) [in UE4Editor-Slate.dylib]
MakeUICommand_InternalUseOnly(FBindingContext*, TSharedPtr<FUICommandInfo, (ESPMode)0>&, char16_t const*, char16_t const*, char16_t const*, char const*, char16_t const*, char16_t const*, EUserInterfaceActionType, FInputChord const&, FInputChord const&) Address = 0x112d75d3a (filename not found) [in UE4Editor-Slate.dylib]
FGenericCommands::RegisterCommands() Address = 0x112d77674 (filename not found) [in UE4Editor-Slate.dylib]
TCommands<FGenericCommands>::Register() Address = 0x112d2a090 (filename not found) [in UE4Editor-Slate.dylib]
FSlateApplication::FSlateApplication() Address = 0x112d28cc0 (filename not found) [in UE4Editor-Slate.dylib]
FSlateApplication::Create(TSharedRef<GenericApplication, (ESPMode)0> const&) Address = 0x112d27563 (filename not found) [in UE4Editor-Slate.dylib]
FSlateApplication::Create() Address = 0x112d273f8 (filename not found) [in UE4Editor-Slate.dylib]
FEngineLoop::PreInitPreStartupScreen(char16_t const*) Address = 0x109d42e40 (filename not found) [in UE4Editor]
GuardedMain(char16_t const*) Address = 0x109d3943d (filename not found) [in UE4Editor]
-[UE4AppDelegate runGameThread:] Address = 0x109d55fcf (filename not found) [in UE4Editor]
-[FCocoaGameThread main] Address = 0x10a2a0331 (filename not found) [in UE4Editor-Core.dylib]
Unknown() Address = 0x7fff301fb7a2 (filename not found) [in Foundation]
_pthread_start Address = 0x7fff67e08109 (filename not found) [in libsystem_pthread.dylib]
thread_start Address = 0x7fff67e03b8b (filename not found) [in libsystem_pthread.dylib]
3

how did you find the downgrade version?

4

Simply from the launcher, as per installing any engine version.

That yellow button with + on it, next to ENGINE VERSIONS will allow you to select the version via drop down before confirming install.

(Also to note, I do have 4.25 installed in the screenshot because the screenshot is from another machine, never managed to make it work on mac after Bad Things happened)