FMultiReaderSingleWriterGT isn't thread safe

Core - May 17, 2016

From https://udn.unrealengine.com/questions/292741/fmultireadersinglewritergt-isnt-thread-safe.html: I've found that FMultiReaderSingleWriterGT has at least 2 bugs: The one that caused a deadlock ...

UFUNCTION in a derived class with a different signature will cause a crash when called

Core - May 12, 2016

Reported by AnswerHub user. UHT should block UFUNCTIONs which hide other UFUNCTIONs with the same name but different signature. ...

Attached Project Crashes While Opening After Conversion From 4.10 to 4.11

Core - May 3, 2016

The attached project is now crashing after being upgraded from 4.10.4 to 4.11.2. This crash also occurs when attempting to open a copy of the project in 4.12 Preview 1. After further investigation ...

[CrashReport] Commandlet crash in UE4Editor_CoreUObject!UPackage::Save

Core - May 2, 2016

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Error message: Assertion failed: Pair != nullptr [Link Removed] [Line: 520] Source Context:4 ...

Using the output from FindAllPakFiles to call StreamableManager::RequestAsyncLoad causes a crash

Core - Apr 22, 2016

A user has reported a problem where the directory that is output from FindAllPakFiles is not compatible with the StreamableManager::RequestAsyncLoad function and will cause a crash if using the two ...

UE4.11.1 Crashes After loading the Substance Plugin

Core - Apr 13, 2016

Regression: UE4.11.1 Crashes After loading the Substance Plugin. This did not Occur in previous versions of the Engine. Reported on Macs and PCs Full Error Message: Fatal error: [Link Removed] [Lin ...

Garbage Collection Causing Noticeable Hitches

Core - Apr 11, 2016

Garbage Collection is causing noticeable hitches on whatever interval it is run on. This is noticeable in the UE4 Profiler, as you will see a spike every X amount of seconds, depending on how often ...

SET_WARN_COLOR does not colorize the Output window

Core - Apr 6, 2016

User is trying to use SET_WARN_COLOR to highlight lines in the output window, but it's not working. ...

Compiling Unreal Lightmass Fails When Using Visual Studio 2015 Update 2

Core - Apr 4, 2016

When attempting to compile Unreal Lightmass in the 4.11 source build, a compiler error pops up when using Visual Studio 2015 Update 2. Error Message: "d:\unrealengine-release\engine\source\program ...

[CrashReport] <unknown module>!UE4Editor_Core!FDebug::AssertFailed()

Core - Mar 28, 2016

Error message: Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 678] Array index out of bounds: 0 from an array of size 0 Source Context: 80 } 81 else ...