When I selected the arkit plug-in, the packaging was wrong. Why can’t be packaged the ue421 arkit template?
Today, after this update the launcher looks like this
And it asked me to install Unreal Tournament at startup…
All controls now VERY small. Menu exists, but it’s 20 pixels at left corner.
I can’t start editor.
I’ve deleted all config folders, but it’s still the same.
Even after reinstallation this problem is not gone.
What I need to do to fix that?
PS. Mac OS 10.12.6 (iMac 27")
Thank you Epic, this is the best Unreal Engine version release in years! I love the following; Replication Graph, Linux Defaults to Vulkan Renderer, Linux Media Player, Linux Crash Report Client GUI, & Experimental Virtual Texturing support. Please continue with this momentum in those categories in future releases!
hey guys, just wanted to install 4.21, but i can’t add it to the launcher (only the 4.21 preview 4 shows up)
Hi the new launcher is bugged. I had 4.21 engine release installed and now its showing preview 4 like other people said. The engine does work properly its showing 4.21 but the launcher is not.
Hi all.
Yes, the recent Launcher update is causing UE 4.21 to display as a “Preview”, but this is a visual issue with the Launcher only (it has no effect on UE 4.21), and should be resolved soon. For any feedback related to the Launcher update please share it in this other forum topic: https://forums.unrealengine.com/unre…-beta-launcher, and any issues with the Launcher should be reported to our Launcher support team.
Thank you.
I found fix for the problem that I described before.
This launcher have a bug with localization.
If switch to english and restart launcher, GUI problem will gone.
PS. It’s not a real fix, because, if I switch language back, I’ll see this GUI problem again…
@igrodel Hey there, sorry to hear about the issue you’re having. Do you by chance have your primary or secondary language set to Polish or Russian on MacOS?
Yes, Russian is primary.
found another issue: i was hitting exactely 16 texture samplers in 4.18. now in 4.21 when using the same material it crashes cause its suddenly using more than 16! i*m using forward rendering, so its crucial to me edit: i solved the issue by using more shared samplers. but can one elaborate on why 4.21 needs one more sample?
Gotcha, this is a known issue with those two languages. Our teams are working on a resolution and should have one soon. I am checking to see if there are any other ways around this.
Thanks,
UPDATE!
The 4.21.1 Hotfix is now live!
Fixed in 4.21.1
Fixed! UE-66389 [CrashReport] UE4Editor_CoreUObject!CastLogError() [casts.cpp:11]
Fixed! UE-66640 [CrashReport] UE4Editor_Engine!UWorld::IsGameWorld() [world.cpp:6185]
Fixed! UE-66639 [CrashReport] UE4Editor_Engine!FSkeletalMeshObjectGPUSkin::ReleaseResources() [skeletalrendergpuskin.cpp:180]
Fixed! UE-66509 Animation Modifiers that contain a null Animation Sequence value cause the Engine to crash when applied to an Animation Sequence
Fixed! UE-66661 [CrashReport] UE4Editor_Engine!FDerivedDataAnimationCompression::Build() [animcompressionderiveddata.cpp:95]
Fixed! UE-66634 [CrashReport] UE4Editor_UnrealEd!FBlueprintEditorUtils::FindBlueprintForGraphChecked() [blueprinteditorutils.cpp:2275]
Fixed! UE-66344 Building solution in shipping configurations builds invalid targets
Fixed! UE-66753 Editor running with “DebugGame Editor” configuration fails to launch (This happens only on 4.21 via Launcher)
Fixed! UE-66880 Bad code generation in VS2017 v15.7 and 15.8
Fixed! UE-66075 Disabling “Include Debug Files” for a Windows Distribution build does not exclude the debug files
Fixed! UE-66104 GitHub 5237 : Fix missing VS version indicator on .sln icon
Fixed! UE-66042 Remote compile Action RPG for iOS fails with rsync errors - unable to download Manifest.xml from the remote Mac
Fixed! UE-66047 Crash starting a timecode synchronization with Media players (AJA) - Assertion failed: Type != ERangeBoundTypes::Open
Fixed! UE-66051 Can’t synchronize Timecode provider with MediaBundle
Fixed! UE-66357 Attempting to start Shootergame with PixelStreaming enabled causes a crash, Assertion failed: IsValid() in SharedPointer.h - nVidia GPU
Fixed! UE-66367 [CrashReport] UE4Editor_BlueprintGraph!UK2Node::RewireOldPinsToNewPins() [k2node.cpp:928]
Fixed! UE-66638 [CrashReport] UE4Editor_Engine!AGameMode::InitGame() [gamemode.cpp:77]
Fixed! UE-66658 [CrashReport] UE4Editor_UnrealEd!FBlueprintEditorUtils::IsLevelScriptBlueprint() [blueprinteditorutils.cpp:3260]
Fixed! UE-66366 [CrashReport] UE4Editor_Core!FTextStringHelper::WriteToString() [text.cpp:1667]
Fixed! UE-66297 Blueprint Structure breaks when the Editor is closed and re-opened if the struct contains variables that are a Class Reference and a Soft Object Reference to a Blueprint
Fixed! UE-66767 K2Node_MakeContainer::PropagatePinType can cause crash
Fixed! UE-65365 Launching on IOS, sessions do not appear in the Session Frontend
Fixed! UE-66292 RecordPerformance Failing to Create Files Due to Missing CSVTools Directory
Fixed! UE-66316 GitHub 5262 : [BUGFIX] Fix for packaging when using custom VULKAN_SDK on GNUX.
Fixed! UE-41727 Linux crash reports are not showing up on crash report website if there is whitespace in the project’s path
Fixed! UE-66280 GitHub 5259 : [BUGFIX] First fix to make UnrealVersionSelector work correct on GNUX
Fixed! UE-64772 Warnings Occur During UHT Build Step when Packaging Code Projects
Fixed! UE-66426 dump_syms slows Linux iteration by several minutes
Fixed! UE-66745 UBT: Makefile generator adds “mono” instead of RunMono.sh on Linux
Fixed! UE-66801 Need command line to disable vulkan workaround in Linux
Fixed! UE-66302 GitHub 5260 : Ignore third party downloaded sdks
Fixed! UE-65229 ARM Server binary size has increased between 4.20 & 4.21
Fixed! UE-66922 GitHub 5306 : Fixing a file path bug
Fixed! UE-66103 Creating a code project on Mac will duplicate the project in the Xcode workspace
Fixed! UE-66050 Crash reported when launching the binary Editor on a 2018 iMac Pro
Fixed! UE-66093 Unable to determine home directory for remote user after updating MacOS to Mojave 10.14.1
Fixed! UE-66001 Device is unable to connect to desktop when using RemoteSession
Fixed! UE-65394 StrategyGame - Tapping on in-game UI buttons causes the buttons to disappear on iOS
Fixed! UE-66171 Assertion shortly after opening application on Lenovo S939
Fixed! UE-65399 Launch Images application crashes shortly after launch image is displayed with Assertion: Index>=0 && Index<NumBits BitArray.h on S939
Fixed! UE-65410 Launch images: Landscape crashes on device after loading on Kindle Fire 5th Gen
Fixed! UE-64067 Regression: Shader library size become too small when using -iterate option with little change in material.
Fixed! UE-61045 tvOS packaging fails due to: Error excluding PersistentDownloadDir from backup
Fixed! UE-65408 Minimum iOS version failure reports as invalid provision on IPP
Fixed! UE-66627 Full Screen Native Resolution not supported on new iPad Pro 11-inch and iPad Pro 12.9 inch (3rd generation)
Fixed! UE-66303 Correctly handle package name redirection and localization during material reload
Fixed! UE-66400 Various Vulkan issues
Fixed! UE-66172 Packages Samples Crash on Launch when Running -vulkan
Fixed! UE-66682 [CrashReport] libUE4Editor-VulkanRHI.so!void FVulkanCommonPipelineDescriptorState::SetUniformBuffer<false>(unsigned char, unsigned int, FVulkanRealUniformBuffer const*) [VulkanPipelineState.h:106]
Fixed! UE-66349 [CrashReport] UE4Editor_Renderer!FMaterialShaderMap::IsValidForRendering() [materialshared.h:882]
Fixed! UE-65820 Engine Test crashes during SK_VertexColors test in -Vulkan
Fixed! UE-66124 QA-Promotion animated lights not illuminating target mesh in vulkan
Fixed! UE-66636 Vulkan crash when running ShooterGame Highrise
Fixed! UE-66737 VulkanBackend doesn’t handle all infinite constant values
Fixed! UE-66678 [CrashReporter] libUE4Editor-VulkanRHI.so!VulkanRHI::VerifyVulkanResult(VkResult, char const*, char const*, unsigned int) [VulkanUtil.cpp:668]
Fixed! UE-62779 Skylight Intensity Doesn’t Behave The Same in OpenGL as with DirectX
Fixed! UE-66290 Progress Percent is removed from UMG Progress Bar when Transform Shear value is changed
Fixed! UE-66074 Minimum iOS Message from Enabling Metal Desktop-Forward Renderer is Inaccurate
Fixed! UE-66333 Crash on Level Load with Sequencer Event
Fixed! UE-66261 Sequence director fires events multiple times if multiple levels are streaming.
Fixed! UE-66897 Sequencer Batch Rendering cannot output multiple render passes in CLI
Fixed! UE-66307 Simulations become invalid after modifying their user parameters in system and emitter editors.
Fixed! UE-66971 CLONE - [CrashReport] UE4Editor_CoreUObject!StaticFindObject() [uobjectglobals.cpp:308]
Fixed! UE-66973 CLONE - Houdini plugin has compile errors
Fixed! UE-66843 Thai fails to shape correctly if the string starts with spaces
Fixed! UE-60696 [CrashReport] UE4Editor_SlateCore!FHittestGrid::FindFocusableWidget<<lambda_3a8b364273a2882da220e6e492096c17>,<lambda_d0075a811a928600995d1b2de6795365>,<lambda_105424556dbaeebf7f5bf9bed3e2f737> >() [hittestgrid.cpp:397]
Fixed! UE-65859 Simple UI Test fails due to screenshot differences in Vulkan
Fixed! UE-65527 Controllers disappear when entering Landscape in VR Mode
Fixed! UE-66353 Vulkan Crash on Startup
Fixed! UE-66522 Incorrect primitive culling with mobile multi-view
Fixed! UE-66329 GitHub 5265 : Removed duplicated WindowsMixedRealityHMD entry
Fixed! UE-65264 Windows Mixed Reality - Setting haptic to 1 and firing haptic causes editor crash
Fixed! UE-66362 [CrashReport] UE4Editor_Engine!HandleInvalidWorldContext() [unrealengine.cpp:12618]
Fixed! UE-65028 ARSharedWorld - “Receiving Preview Image/AR Data” are misleading messages for the client when they are waiting for the host to share their AR space
Fixed! UE-66955 Rebuild Light Maps UAT Commandlet contains null object warnings
REMEMBER: Please report any new bugs you find by following the How To Report a Bug Guide
Great! 
Please HELP ME AT THOSE BUGS!!!
https://answers.unrealengine.com/questions/853859/unreal-engine-420421-compile-shader-problem.html
https://answers.unrealengine.com/questions/821568/bug-in-materails-ue420.html
https://answers.unrealengine.com/questions/821820/ue420-materails-performance-larger-then-before.html
i have tryed to find the way to fix it along time and still didnt find it , please HELP!!!
Google VR support is still broken due to bug Unreal Engine Issues and Bug Tracker (UE-66417)
Does the status of this bug mean that the whole major release of Unreal Engine will lack support of that Google VR platform?
Thanks for UE-66297 ! That was really annoying…
I am trying to install nvidia codeworks android 1r7u1 for unreal 4.21 on windows 10. but when i launch the setup.exe its take sometime then nothing happens after that. I checked task manager durring launch setup.exe after few seconds the windows kill the setup.exe i don’t why its happened with me. Please if anyone know how to fix this. Tell me thanks
Just like 4.12
4.13,
4.14,
4.15,
4.16,
4.17,
4.18 ,
4.19
and 4.20,
you install it, create a new project, then wait for 24 hours while it is stuck at 45%. Go onto ‘Unreal Answers’ yet again, peruse 10 years of unanswered questions about this problem. Then, extreme disgust and hatred for all things EPIC 100% reaffirmed for another year, go back to working in Unity and tell yourself, maybe the NEXT version of Unreal will be usable! MAYBE EVEN OPEN A NEW EMPTY PROJECT FILE!! :~) NAH, SILLY PIPE DREAMS,…
I AM SO **** SICK OF THIS.
The engine compiles shaders at 45%, and it can take up to 20 minutes depending on how many shaders there are and how weak your PC is. But please, please, please, do go back to Unity, don’t post here anymore, this engine is the worst, trust me.
I´m getting an error when updated to 4.21.1 " Shader CompileWorker failed: Mismatched shader version for format SF_VULKAN_SM4;…" that I havn´t seen before (It showed up after updating to 4.21.1. Have anyone seen this and/or have any suggestions?