Encountering assertion failed on startup

MachineId:796A080348AF8857A365E4AAD05E79CE
EpicAccountId:075e7b9beca341b9919cdb5c3792e212

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

Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.6\Engine\Source\Runtime\Core\Public\Containers\Array.h] [Line: 679]
Array index out of bounds: -550209553 from an array of size -55020955

KERNELBASE + 35740 bytes
UE4Editor_Core + 3092349 bytes
UE4Editor_Core + 1597688 bytes
UE4Editor_Core + 1479058 bytes
UE4Editor_Engine + 7449848 bytes
UE4Editor_Engine + 7452262 bytes
UE4Editor_Engine + 8252268 bytes
UE4Editor_Engine + 7524222 bytes
UE4Editor_Engine + 1299491 bytes
UE4Editor_Engine + 1446844 bytes
UE4Editor_Engine + 8851078 bytes
UE4Editor_Engine + 8881168 bytes
UE4Editor_Core + 713859 bytes
UE4Editor_Core + 714365 bytes
UE4Editor_Core + 842869 bytes
UE4Editor_Engine + 9095109 bytes
UE4Editor_Engine + 9009872 bytes
UE4Editor_Engine + 9020215 bytes
UE4Editor_Engine + 5593062 bytes
UE4Editor_Engine + 5622284 bytes
UE4Editor_UnrealEd + 1803906 bytes
UE4Editor_UnrealEd + 6686342 bytes
UE4Editor!FEngineLoop::Tick() + 3876 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.6\engine\source\runtime\launch\private\launchengineloop.cpp:2214]
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]

Getting the same problem here!

Hey Samaed, EoinOBroin,

I’m looking into this issue now. It looks like this crash is happening in 4.6.1. If you were able to open the project previously in 4.6.1, but you can’t open it now, it’s probably due to a corrupt asset. Samaed’s crash report makes it seem like a skeletal mesh component causing the crash; if you try removing any blueprints that have skeletal meshes attached from your project (store them somewhere else on the computer for the time being), are you able to open the project?

EoinOBroin, if you’re seeing the exact same crash report, I’d recommend the same measures. If your crash report is different, then the cause of your crash probably is too.

I actually got a different crash report (it was the same up until the “Assertion failed:” part), I reported it when it occurred twice. I remember that I was using my xbox controller in the editor play mode to playtest, and I disconnected it a few seconds after ending play, however I think one of the analog sticks was slightly moving as when the controller got disconnected, it was almost like the fov in editor view went to maximum (or minimum). I couldn’t get rid of this after multiple attempts of turning on and off the controller, attempting to reset the view. I eventually quit the project, and it loaded back up just fine, but as soon as I played or simulated, the crash occured. (Also using 4.6.1). Luckily I had a backup from a few hours before, so I replaced the project and all is well now!

Many thanks for the help.

I solved the problem by creating two static meshes from the previous skeletal mesh and manipulate only those two as it did more sense in my context.

Everything is fine, I can finally duplicate as much as I want my Actor!

Glad to hear it, guys. Let me know if you have any more problems with this.