The 4.17.1 Hotfix is now live! This hotfix resolves a number of important issues in the 4.17 release, including a widespread Mac crash and a UBT failure while building.

Feel free to discuss this release on the 4.17 Forum thread.

If you experience a bug with the 4.17.1 Hotfix, please follow the How to Report a Bug guide to report it on the UE4 Answerhub.

Fixed in 4.17.1

Fixed! UE-48140 Materials get switched up while building HLODs in case the section order is different than the material order
Fixed! UE-48249 HLOD crash when dragging and dropping actors into their own cluster in the HLOD outliner - ALODActor
Fixed! UE-48246 Memory usage regression in the editor caused by FArchiveAsync2 buffers
Fixed! UE-48118 PrimaryAssetLabel Assets are getting stripped from ShooterGame on the Launcher
Fixed! UE-48106 Hot-reload failing to link
Fixed! UE-48197 UBT crashes when doing an incremental build
Fixed! UE-48143 Distortion Displacement Track is empty in new level sequence using a distortion file with a framerate of 0
Fixed! UE-47852 Crash occurred launching QAGame onto Windows with Nativization enabled
Fixed! UE-48309 Mesh data will be deleted from Static Mesh if added as a Hierarchical Instanced Static Mesh Component through blueprint
Fixed! UE-48175 Make Dialogue Context node no longer has the speaker and targets options exposed
Fixed! UE-48223 Crash when opening a blueprint that implements an interface that has been deleted
Fixed! UE-48240 User project crashes after changing struct
Fixed! UE-47843 QABP_Containers is dirtied when opened
Fixed! UE-47523 Undoing pasting a component will crash ([CrashReport] UE4Editor_CoreUObject!FWeakObjectPtr::IsValid() [weakobjectptr.cpp:48])
Fixed! UE-48239 GoogleVR fails to package with Gradle
Fixed! UE-48185 GitHub 3876 : Error MCP Android
Fixed! UE-48396 Crash when building lighting with a skylight that draw lit translucent material
Fixed! UE-48304 [CrashReport] UE4Editor-MetalRHI.dylib!FMetalRenderPipelineDesc::CreatePipelineStateForBoundShaderState()
Fixed! UE-47945 Skeletal mesh components texture overstream
Fixed! UE-47516 Sequencer doesn't animate Actor in Sublevel in Standalone (Works in PIE)
Fixed! UE-48093 UE4Editor crashes when starting a movie capture in sequencer
Fixed! UE-48190 Audio volume values get reset
Fixed! UE-48095 Crash when adding a Filmback Preset to a Sequencer CameraComponent
Fixed! UE-48298 Crash When Attempting to Add Existing Streaming Levels Already Present in the Levels Window
Fixed! UE-45837 [CrashReport] Mac crash in UE4Editor-Core.dylib!FApplePlatformString::TCHARToCFString()
Fixed! UE-48475 [CrashReport] UE4Editor-Core.dylib!FTextHistory::Rebuild(TSharedRef<FString,()