Hi, I upgraded my 4.51 project to 4.6 (from the launcher). It opens the project fine but crashes if I open ANY blueprint, either my own or from the Engine directory. Here is the stack trace:
MachineId:8177C80741D13FBBAF5B8DAFB02BA99F
EpicAccountId:930d6f72eb1a4ab7917b028f585694b1
Unknown exception - code 00000001 (first/second chance not available)
Fatal error: [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.6\Engine\Source\Runtime\CoreUObject\Private\Templates\Casts.cpp] [Line: 11]
Cast of nullptr to Blueprint failed
KERNELBASE + 24684 bytes
UE4Editor_Core + 3092333 bytes
UE4Editor_Core + 1597375 bytes
UE4Editor_CoreUObject + 369143 bytes
UE4Editor_Engine + 1794732 bytes
UE4Editor_Engine + 2068206 bytes
UE4Editor_BlueprintGraph + 836200 bytes
UE4Editor_BlueprintGraph + 833813 bytes
UE4Editor_BlueprintGraph + 808020 bytes
UE4Editor_BlueprintGraph + 1023659 bytes
UE4Editor_BlueprintGraph + 608001 bytes
UE4Editor_UnrealEd + 9615636 bytes
UE4Editor_Engine + 1970451 bytes
UE4Editor_CoreUObject + 240849 bytes
UE4Editor_CoreUObject + 946774 bytes
UE4Editor_CoreUObject + 1054484 bytes
UE4Editor_CoreUObject + 944791 bytes
UE4Editor_CoreUObject + 947419 bytes
UE4Editor_CoreUObject + 1062891 bytes
UE4Editor_CoreUObject + 1460613 bytes
UE4Editor_CoreUObject + 1193007 bytes
UE4Editor_CoreUObject + 1189666 bytes
UE4Editor_CoreUObject + 1193874 bytes
UE4Editor_CoreUObject + 1189666 bytes
UE4Editor_CoreUObject + 1189156 bytes
UE4Editor_CoreUObject + 976397 bytes
UE4Editor_CoreUObject + 1185872 bytes
UE4Editor_CoreUObject + 951800 bytes
UE4Editor_CoreUObject + 1026078 bytes
UE4Editor_CoreUObject + 1460171 bytes
UE4Editor_CoreUObject + 1193007 bytes
UE4Editor_CoreUObject + 1189666 bytes
UE4Editor_CoreUObject + 1193874 bytes
UE4Editor_CoreUObject + 1189666 bytes
UE4Editor_CoreUObject + 1189156 bytes
UE4Editor_CoreUObject + 976397 bytes
UE4Editor_CoreUObject + 1185872 bytes
UE4Editor_CoreUObject + 951800 bytes
UE4Editor_CoreUObject + 1026078 bytes
UE4Editor_CoreUObject + 1460171 bytes
UE4Editor_CoreUObject + 1193007 bytes
UE4Editor_CoreUObject + 1189666 bytes
UE4Editor_CoreUObject + 1193874 bytes
UE4Editor_CoreUObject + 1189666 bytes
UE4Editor_CoreUObject + 1189156 bytes
UE4Editor_CoreUObject + 976397 bytes
UE4Editor_CoreUObject + 1185872 bytes
UE4Editor_CoreUObject + 951800 bytes
UE4Editor_CoreUObject + 1026078 bytes
UE4Editor_CoreUObject + 1460171 bytes
UE4Editor_CoreUObject + 1511826 bytes
UE4Editor_CoreUObject + 1580292 bytes
UE4Editor_Kismet + 1245092 bytes
UE4Editor_Kismet + 725992 bytes
UE4Editor_Kismet + 1181122 bytes
UE4Editor_Kismet + 2232182 bytes
UE4Editor_AssetTools + 928397 bytes
UE4Editor_UnrealEd + 11017949 bytes
UE4Editor_AssetTools + 537065 bytes
UE4Editor_ContentBrowser + 1843730 bytes
UE4Editor_ContentBrowser + 1342247 bytes
UE4Editor_ContentBrowser + 1386087 bytes
UE4Editor_ContentBrowser + 1891974 bytes
UE4Editor_ContentBrowser + 1336641 bytes
UE4Editor_ContentBrowser + 1382442 bytes
UE4Editor_ContentBrowser + 1371670 bytes
UE4Editor_ContentBrowser + 1977407 bytes
UE4Editor_ContentBrowser + 1892559 bytes
UE4Editor_Slate + 428894 bytes
UE4Editor_Slate + 157325 bytes
UE4Editor_Slate + 829529 bytes
UE4Editor_Slate + 768779 bytes
UE4Editor_Core + 2484300 bytes
UE4Editor_Core + 2400747 bytes
UE4Editor_Core + 2489259 bytes
UE4Editor_Core + 2387170 bytes
user32 + 9268 bytes
user32 + 8855 bytes
UE4Editor_Core + 2490470 bytes
UE4Editor!FEngineLoop::Tick() + 3434 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.6\engine\source\runtime\launch\private\launchengineloop.cpp:2193]
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]