Crash to desktop when loading map in Packaged game [urgent]

Hello,

Firstly sorry for the [urgent] tag - I’m just trying to deploy an update for my game and running across an issue.

I’ve packaged my game and the default level loads correctly, however when I press ‘start game’ the game crashes. I presume the issue is with loading the level, but I can’t be sure.

Some notes.

  • I always migrate the core game content to a new project and then package that version. This way everything is clean. I do this by migrating the map and it takes with it all the depending content to the new project.
  • I have gone through and checked for errors on the packaging logs and there doesn’t seem to be any red errors. Just some yellow warning (a lot of which I have resolved).
  • Something strange did happen where the first package attempt failed. It was related to a folder called Blueprints > FBXImporter. This folder was not there in my source project and seems to have been created by unreal engine when I migrated the content. In this folder there is a blueprint called BP_Sceneroot that had this compile error.

The only way I could package the game was by breaking the red connection. I’m not sure if this is related but I thought I would add anyway, since I found it strange that this folder had been added (not by me).
Once I disconnect ‘self’ (existential crisis) the game packaged. But now I have the issue where I can get to the main menu, but the game crashes to desktop when loading the main level.

Here is my crash dump - I’m afraid I couldn’t make much sense of it.

Dump Summary
------------
Dump File:	UE4Minidump.dmp : C:\Users\User\AppData\Local\GAME\Saved\Crashes\UE4CC-Windows-2DC326F4496E97DF243FA1B0C85B652D_0000\UE4Minidump.dmp
Last Write Time:	10/03/2019 18:59:08
Process Name:	GAME-Win32-Shipping.exe : f:\GAME\Packaged\PT\WindowsNoEditor\GAME\Binaries\Win32\GAME-Win32-Shipping.exe
Process Architecture:	x86
Exception Code:	0xC0000005
Exception Information:	The thread tried to read from or write to a virtual address for which it does not have the appropriate access.
Heap Information:	Not Present

System Information
------------------
OS Version:	10.0.17134
CLR Version(s):	

Modules
-------
Module Name	Module Path	Module Version
-----------	-----------	--------------
GAME-Win32-Shipping.exe	f:\GAME\Packaged\PT\WindowsNoEditor\GAME\Binaries\Win32\GAME-Win32-Shipping.exe	4.21.2.0

I don’t want to spam with the rest of the log, but I’m happy to attach if you guys need it.

I’m really keen to release this update to my players, so I’m eagerly waiting for some insights from you guys that could help me solve this problem.