Performing a Clean on a project using a binary Engine installation on Mac removes some Engine .dylib files

Core - May 17, 2018

When a Clean is performed on a code project that uses a binary Engine installation on a Mac, some of the Engine's .dylib files are removed during the Clean process. A Clean process for a project usi ...

Packaging for Win32 fails on Visual Studio version 15.7.1 with multiple unable to find mspdbcore.dll errors

Core - May 15, 2018

This did not reproduce with Microsoft Visual Studio version 15.6.2 at the same CL in //UE/Main. Only occurred after I updated from 15.6.2 to 15.7.1. ...

[CrashReport] UAIBlueprintHelperLibrary::CreateMoveToProxyObject [aiblueprinthelperlibrary.h:26]

Core - May 9, 2018

User comments in crash group:I tried making an AI run into my sidescroller characterstarting level with ai 2188 void RemoveAllSwap(const PREDICATE_CLASS& Predicate, bool bAllowShrinking = tru ...

Preprocessor checks for VS 2017 version of MSC do not look for the latest version of MSC

Core - May 8, 2018

There are some pre-processor checks in the Engine code that look for the version of MSC that was introduced with Visual Studio 2017 (eg. #if _MSC_VER == 1900). However, this does not take into consi ...

TPropertyValueIterator skips TMap values when KeyType is a UStruct

Core - May 7, 2018

From https://udn.unrealengine.com/questions/431271/tpropertyvalueiterator-skips-tmap-values-when-keyt.html The property value iterator has logic where it tries to iterate over all properties in a s ...

Crash when running build with an Automation Test

Core - Apr 30, 2018

Licensee is trying to run an Automation Test from Blueprint in a packaged build. When the exe is launched it crashes with a fatal error. ...

Allow having TArray with index size using 64 bits instead of 32 bits

Core - Apr 27, 2018

With the geometry data getting bigger and bigger we hit more often the int32 limits of the default TArray. All geometry data is store in array so we cannot have more then 2GB of vertexinstances or t ...

[CrashReport] UE4Editor_Core!rml::internal::LocalLOCImpl<8,32>::get()

Core - Apr 25, 2018

User comments in crash group:this map crashes on loadok so it seems opening any map from Modular Stadium Kit causes crash right after shaders compiling is done! im using it with another market place ...

Cannot use code class if it is placed in a folder named "Device"

Core - Apr 24, 2018

C++ classes that are located within a folder named "Device" cannot be seen or used within the Editor. The classes cannot be found within the Content Browser, and they cannot be used to create Bluepr ...

Cannot run any packaged project if "Force all skinned meshes to recompute tangents" has been enabled in an unrelated project

Core - Apr 20, 2018

Enabling the "Force all skinned meshes to recompute tangents" sets the value at a Windows user level so that it affects all UE4 projects opened by that user, including unrelated packaged projects. T ...