Unreal Engine Issues

Having lots of SpeedTrees loaded in/out/in with level streaming causes crash with Standalone game

Description: When using lots of static meshes placed in the scene and using level streaming to switch levels out can cause standalone game to crash while loading the map back in. For example, if you ...

UBT reporting VS2012 as an unsupported compiler even when UAT was passed -NoCompile

The editor will pass UAT the -NoCompile flag when building a Blueprint only project, however UBT has been changed to throw an exception if it detects VS2012 as the only available compiler (UEBuildWi ...

Editor is crashing on Startup after opening a copy of older project

Edit: Looks like failing to read the DDC when compiling global shaders User is getting a crash when they are attempting to open a copy of their project from version 4.4.3. Attached CrashLogs, DXd ...

Fail to compile with Added AIController class

User fails to compile code template after adding AIController code to project. Regression: Not a regression happens in 4.6.1 CL-2386410 Setting up Mono Building MyProjectEditor... Compiling game m ...

UEnum::NumEnums appears to be returning one more than the actual number of elements in an enum.

A user reported that UEnum::NumEnums appears to be returning one more than the actual number of elements in the enum. ...

Packaging a game fails in 4.7 Promoted branch on GitHub because UBT tries to pass 33,000+ characters through the command line.

A user has indicated that he was having some trouble packaging a game in the Promoted branch of 4.7 from GitHub. It appears that UBT was trying to pass 33 thousand characters through the command lin ...

Cannot Package Game for Windows from External Drive on Windows 8.1 Boot Camp Mac

User is trying to package the xixoBerlinFlat Marketplace and cannot get a packged project from an external drive project on a Windows 8.1 x64 system running via Bootcamp on a Mac. ...

Lighting not rebuilding. SWARM: "Error: A 32 bit processes cannot access modules of a 64 bit process."

Inconsistent documentation on how to use AsyncTasks

The documentation found here may be out of date:https://docs.unrealengine.com/latest/INT/API/Runtime/Core/Async/FAsyncTask/index.html From Lauren R: "Looking at P4, that example code is mostly from ...

Virtual Memory Limit Listed in Logs

Logs show virtual memory limit for Windows 64 bit: 8388608.00. This is erroneous information that can be removed or replaced with more immediately useful information. ...