The 4.20.2 Hotfix is now live! This Hotfix includes fixes for a variety of crash related errors and more.

Feel free to discuss this release on the 4.20 forum thread.

If you experience a bug with the 4.20.2 Hotfix, please follow the How to Report a Bug guide to report it.

Fixed in 4.20.2
Fixed! UE-62699 Infinite Loop When Generating HLOD Clusters
Fixed! UE-62838 Missing assignment/recursion in UHLODProxy::FindFirstActor can potentially lead to an infinite loop
Fixed! UE-62729 GitHub 4957 : [UE-62699] Fix infinite loop
Fixed! UE-62471 Data corruption saving soft references to circularly-renamed assets
Fixed! UE-62042 Generate Project files does not add Intellisense include paths for .generated.h files
Fixed! UE-62223 BuildCookRun fails to package if the -build parameter is used and debug symbols have not been installed in the binary Engine
Fixed! UE-62782 BuildCommonTools build fails in 4.20 due to missing UnrealSwarm.sln file
Fixed! UE-63023 4.20.2 version is currently still listed as 4.20.1 in Binary launcher
Fixed! UE-62032 UBT: Linux cross-builds no longer print progress ([0/1200])
Fixed! UE-62501 Crash when enabling Edit Mode
Fixed! UE-62192 Can't build UnrealStudio hotfix
Fixed! UE-62215 AJA plugin doesn't output when running in the editor 'Selected viewport' mode
Fixed! UE-62821 GitHub 4980 : Fix: CrowdManagerClass property in UNavigationSystem is now correctly marked with "config" specifier.
Fixed! UE-62352 When a Sublevel has "Initially Loaded" set to true and "Initially Visible" set to false, the Editor will crash after exiting PIE
Fixed! UE-63062 Lighting not building in sublevels using Resave Packages
Fixed! UE-62460 [CrashReport] UE4Editor_BlueprintGraph!UK2Node_CallArrayFunction::NotifyPinConnectionListChanged() [k2node_callarrayfunction.cpp:91]
Fixed! UE-62444 [CrashReport] UE4Editor_UnrealEd!FBlueprintEditorUtils::FindBlueprintForGraphChecked() [blueprinteditorutils.cpp:2236]
Fixed! UE-62491 [CrashReport] UE4Editor_Core!FName::InitInternal_FindOrAddNameEntry<char>() [unrealnames.cpp:818]
Fixed! UE-62303 [CrashReport] UE4Editor_Engine!UEdGraphNode::ClearCompilerMessage() [edgraphnode.h:538]
Fixed! UE-62672 Crash upon attempting to load into session via Join Session in Blueprints on iOS
Fixed! UE-62605 Actor Component Replication Not Working on Dynamically Spawned Components in Blueprint
Fixed! UE-62225 Animations are stuttering in Game Preview Server window
Fixed! UE-62197 Startup video playlist never advances to next movie and loops forever
Fixed! UE-62808 Linux crash handler locks up when crash happens during a file operation
Fixed! UE-62515 The editor refuses to run (even as cooker) when core size cannot be set
Fixed! UE-62453 Opening the editor on Linux with -vulkanvalidation results in VulkanDebug ensures
Fixed! UE-62910 Linux unable to find PlatformInfo crash trying to Launch On
Fixed! UE-61154 TM-Decals Brick walls render bright color in cracks and entirely that color from low angle
Fixed! UE-62348 Vulkan: invalid transitions flagged by validation layer
Fixed! UE-62132 r.SupportPointLightWholeSceneShadows Set to False Causes Crash When Trying to Place a PointLight
Fixed! UE-62628 Vulkan validation messages aren't logged on Linux, Windows
Fixed! UE-55997 Application crashes on launch on iOS
Fixed! UE-61566 CLONE - Crash Assertion failed: InstanceReorderTable.IsValidIndex during normal gameplay
Fixed! UE-61994 [CrashReport] UE4Editor_Engine!UWorld::UpdateParameterCollectionInstances() [world.cpp:1082]
Fixed! UE-62323 Copy/paste or Duplicate a spawnable doesn't work
Fixed! UE-62397 Python glue generation can cause memory corruption
Fixed! UE-48899 [CrashReport] UE4Editor_Landscape!ULandscapeInfo::RegisterActor() [landscape.cpp:1882]
Fixed! UE-60319 [CrashReport] UE4Editor_Niagara!NiagaraEmitterInstanceBatcher::ResolveDatasetWrites() [niagaraemitterinstancebatcher.cpp:168]
Fixed! UE-61997 [CrashReport] UE4Editor_D3D11RHI!FD3D11DynamicRHI::RHICreateVertexBuffer() [d3d11vertexbuffer.cpp:15]
Fixed! UE-62187 Virtual Joystick movement is heavily influence by Virtual Camera Boom Scale
Fixed! UE-61865 Unable to scrub a performance by touch and dragging the main Virtual Camera window
Fixed! UE-61766 Virtual Camera isn't attached to camera track when performance is loaded
Fixed! UE-54565 Packaged game/Editor with Stereo Layers crashes when exiting game through steam VR overlay
Fixed! UE-62277 ARCore plugin missing 'tools' components