Expanding node inside FlipFlop crashes UE4.6

Development Programming & Scripting
1

Updated from 4.6 Preview to 4.6 yesterday; and tried out a blueprint with a FlipFlop.

Creating a FlipFlop, rightclicking and then clicking on Expand Node crashes Engine.

I’ve tried with a 4.6 Preview project and a new blank one, both repro 100%.

Already submitted 3 of these bug reports.

I can’t find any recent logs in C:\Program Files\Unreal Engine\4.6\Engine\Saved\Logs

Project and CrashReporter Logs: https://.com/folderview?id=0BzRp-cLiZDUJbmZYSW5GM0tjMkk&

MachineId:1B39A4B04BF6684849F294A16EA627FF
EpicAccountId:98fa2dd4afbd445f90fb59fbce4a62be

Unknown exception - code 00000001 (first/second chance not available)

Assertion failed: Result [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.6\Engine\Source\Editor\UnrealEd\Private\Kismet2\BlueprintEditorUtils.cpp] [Line: 1671] 

KERNELBASE + 23544 bytes
UE4Editor_Core + 3092333 bytes
UE4Editor_Core + 1597672 bytes
UE4Editor_Core + 1479042 bytes
UE4Editor_UnrealEd + 9487889 bytes
UE4Editor_BlueprintGraph + 577232 bytes
UE4Editor_GraphEditor + 1387764 bytes
UE4Editor_GraphEditor + 1220478 bytes
UE4Editor_SlateCore + 490433 bytes
UE4Editor_Slate + 2264925 bytes
UE4Editor_SlateCore + 503875 bytes
UE4Editor_SlateCore + 875985 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_SlateCore + 876082 bytes
UE4Editor_Slate + 940466 bytes
UE4Editor_Slate + 940757 bytes
UE4Editor_Slate + 938720 bytes
UE4Editor!FEngineLoop::Tick() + 4010 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.6\engine\source\runtime\launch\private\launchengineloop.cpp:2239]
UE4Editor!GuardedMain() + 479 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.6\engine\source\runtime\launch\private\launch.cpp:131]
UE4Editor!GuardedMainWrapper() + 26 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.6\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() + 249 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.6\engine\source\runtime\launch\private\windows\launchwindows.cpp:202]
UE4Editor!__tmainCRTStartup() + 329 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]
2

Hi Moter8,

Thanks for report! I was able to verify this in 4.5, 4.6, and our internal engine, and have entered a bug report in our system (UE-6234). It appears that Expand Node option in right-click menu is not functioning correctly for any composited node (For Loops, FlipFlop, etc). For now, you should still be able to double-click node to open it up and look inside.

Hope that helps, and thanks again for bringing issue to our attention!