After updating to 4.10.4 crash when launching standalone game

Worked fine in 4.10.3

Tried recompiling project, purging DDC, purging Intermediate files.
Play in editor works, play in new editor window works.
Cannot record matinee sequences as well.

Expected 4.10 to be stable, in trouble now as deadlines approach and cannot record video…any recommendation how to downgrade? / what I’m doing wrong?

Have a good day!
MBZ

Bug report as follows:

MachineId:BA61E9D5433F48550FBB4E908798E527
EpicAccountId:5c8d11cf049444319dc612d5d79c43e9

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

"Assertion failed: IsInGameThread() [F

UE4Editor_Core!FDebug::AssertFailed() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\misc\outputdevice.cpp:374]
UE4Editor_Slate!FSlateApplication::Get() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\slate\public\framework\application\slateapplication.h:157]
UE4Editor_Engine!UFont::GetMaxCharHeight() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\engine\private\font.cpp:311]
UE4Editor_Engine!UTextRenderComponent::CalcBounds() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\engine\private\components\textrendercomponent.cpp:830]
UE4Editor_Engine!USceneComponent::UpdateBounds() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\engine\private\components\scenecomponent.cpp:723]
UE4Editor_Engine!UPrimitiveComponent::SendRenderTransform_Concurrent() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\engine\private\components\primitivecomponent.cpp:374]
UE4Editor_Engine!UActorComponent::DoDeferredRenderUpdates_Concurrent() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\engine\private\components\actorcomponent.cpp:1209]
UE4Editor_Engine!<lambda_035012bcac7f7ae2b8ab0b62f7c881e0>::operator()() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\engine\private\leveltick.cpp:835]
UE4Editor_Engine!FParallelForData::Process() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\public\async\parallelfor.h:71]
UE4Editor_Engine!TGraphTask<FParallelForTask>::ExecuteTask() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\public\async\taskgraphinterfaces.h:779]
UE4Editor_Core!FTaskThread::ProcessTasks() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\async\taskgraph.cpp:539]
UE4Editor_Core!FTaskThread::ProcessTasksUntilQuit() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\async\taskgraph.cpp:340]
UE4Editor_Core!FTaskThread::Run() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\async\taskgraph.cpp:690]
UE4Editor_Core!FRunnableThreadWin::Run() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\windows\windowsrunnablethread.cpp:74]

Found the reason!
Caused by Font Asset with no families / font loaded (duh, UE4Editor_Engine!UFont::GetMaxCharHeight() was obivious);

Solved by deleting the empty Font Asset;