4.21 Release


Hey folks. Currently you can grab the 4.21 release off of github. Further updates will be coming for marketplace users.

The primary feature of the new release is the support of 4.21. We did manage to squeeze in a few other bug fixes along the way.

Bug Fixes

  • Struct usage no longer crashes in packaged games
  • Prevent UObject has no embedded instance error when accessing structs
  • Resolve raw data before calling sk constructor !(). This prevents crashing in packaged games that access raw data in the constructor.
  • Prevent SkookumScriptBehaviorComponent from creating an orphaned :sk: instance. This caused SkookumScriptBehaviorComponent to be null perpetually and any variables within it to be inaccessible.
  • Reset elapsed world time tracking every time the world comes up for play. Previously it would only be reset on 1st play.
  • Prevent IDE crash during long startups where source control status window was queried before the :ue4: IDE was initialized
  • Prevent script file rename errors when moving blueprints in :ue4:

If you have any questions please let us know. If any pioneers pull down from github and build, please relay your results. More soon.

4.20 -> 4.21 Update

Great news!

Further updates will be coming for marketplace users.

My case. A week or two…?


The Marketplace build system was having issues building so we’ll continue to look into it.


I got this while building

37>Using Visual Studio 2017 14.16.27023 toolchain (C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023) and Windows 10.0.17134.0 SDK (C:\Program Files (x86)\Windows Kits\10).
37>UnrealBuildTool : error : 'AgogCore' is not a C++ module (referenced via default plugins -> SkookumScript.uplugin)
37>                        (see ../Programs/UnrealBuildTool/Log.txt for full exception trace)


I have the same error too, plus another one that was fixed in 4.21.1


We’ll look into this asap.


Thanks to you.

Global Game Jam is near. Need your technology~ TAT


Any news on the update?