My UE4 has been crashing regular lately but was still usable after i opened it back up. After a recent crash i opened it up and tried to access my player controller blueprint and it crashed. It does this every time even after ive rebooted my computer, can anyone help please? Error Log below:-
Assertion failed: UpdatePin [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.5\Engine\Source\Editor\KismetCompiler\Private\KismetCompiler.cpp] [Line: 1787]
KERNELBASE.dll!UnknownFunction (0x000007fefbe8940d) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!UnknownFunction (0x000007fee54a71c4) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!UnknownFunction (0x000007fee53398c8) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!UnknownFunction (0x000007fee531e892) + 0 bytes [UnknownFile:0]
UE4Editor-KismetCompiler.dll!UnknownFunction (0x000007fee69c22e4) + 0 bytes [UnknownFile:0]
UE4Editor-KismetCompiler.dll!UnknownFunction (0x000007fee69c3d49) + 0 bytes [UnknownFile:0]
UE4Editor-KismetCompiler.dll!UnknownFunction (0x000007fee69ae543) + 0 bytes [UnknownFile:0]
UE4Editor-KismetCompiler.dll!UnknownFunction (0x000007fee69b0ff3) + 0 bytes [UnknownFile:0]
UE4Editor-KismetCompiler.dll!UnknownFunction (0x000007fee69a4fdd) + 0 bytes [UnknownFile:0]
UE4Editor-KismetCompiler.dll!UnknownFunction (0x000007fee69a6b29) + 0 bytes [UnknownFile:0]
UE4Editor-KismetCompiler.dll!UnknownFunction (0x000007fee69a669e) + 0 bytes [UnknownFile:0]
UE4Editor-UnrealEd.dll!UnknownFunction (0x000007fee1f5eebb) + 0 bytes [UnknownFile:0]
UE4Editor-Engine.dll!UnknownFunction (0x000007fee2b6d142) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee79d7eff) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7a81f29) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7a9baa4) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7a81780) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7a9d812) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7afbe4f) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7abd041) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7abc59d) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7abd162) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7abc59d) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7abc4ba) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7a88ce3) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7abb8c0) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7a83178) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7a94b1a) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7afbd7c) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7abd041) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7abc59d) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7abd162) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7abc59d) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7abc4ba) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7a88ce3) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7abb8c0) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7a83178) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7a94b1a) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7afbd7c) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7b0811b) + 0 bytes [UnknownFile:0]
UE4Editor-CoreUObject.dll!UnknownFunction (0x000007fee7b16d84) + 0 bytes [UnknownFile:0]
UE4Editor-ContentBrowser.dll!UnknownFunction (0x000007fedba1ea57) + 0 bytes [UnknownFile:0]
UE4Editor-ContentBrowser.dll!UnknownFunction (0x000007fedba779c2) + 0 bytes [UnknownFile:0]
UE4Editor-ContentBrowser.dll!UnknownFunction (0x000007fedba026d3) + 0 bytes [UnknownFile:0]
UE4Editor-ContentBrowser.dll!UnknownFunction (0x000007fedba0c128) + 0 bytes [UnknownFile:0]
UE4Editor-ContentBrowser.dll!UnknownFunction (0x000007fedba83976) + 0 bytes [UnknownFile:0]
UE4Editor-ContentBrowser.dll!UnknownFunction (0x000007fedb9fb9f6) + 0 bytes [UnknownFile:0]
UE4Editor-ContentBrowser.dll!UnknownFunction (0x000007fedba0a18b) + 0 bytes [UnknownFile:0]
UE4Editor-ContentBrowser.dll!UnknownFunction (0x000007fedba07876) + 0 bytes [UnknownFile:0]
UE4Editor-ContentBrowser.dll!UnknownFunction (0x000007fedba9859f) + 0 bytes [UnknownFile:0]
UE4Editor-ContentBrowser.dll!UnknownFunction (0x000007fedba83bbf) + 0 bytes [UnknownFile:0]
UE4Editor-Slate.dll!UnknownFunction (0x000007fee5a27bd5) + 0 bytes [UnknownFile:0]
UE4Editor-Slate.dll!UnknownFunction (0x000007fee5a1840b) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!UnknownFunction (0x000007fee5403d0c) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!UnknownFunction (0x000007fee53f62ab) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!UnknownFunction (0x000007fee5405019) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!UnknownFunction (0x000007fee53f3542) + 0 bytes [UnknownFile:0]
USER32.dll!UnknownFunction (0x0000000076db9bd1) + 0 bytes [UnknownFile:0]
USER32.dll!UnknownFunction (0x0000000076db98da) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!UnknownFunction (0x000007fee54a2ed6) + 0 bytes [UnknownFile:0]
UE4Editor.exe!FEngineLoop::Tick() (0x000000013f59a752) + 8 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.5\engine\source\runtime\launch\private\launchengineloop.cpp:2111]
UE4Editor.exe!GuardedMain() (0x000000013f58f9df) + 0 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.5\engine\source\runtime\launch\private\launch.cpp:133]
UE4Editor.exe!GuardedMainWrapper() (0x000000013f58fa4a) + 5 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.5\engine\source\runtime\launch\private\windows\launchwindows.cpp:125]
UE4Editor.exe!WinMain() (0x000000013f59bf19) + 17 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.5\engine\source\runtime\launch\private\windows\launchwindows.cpp:201]
UE4Editor.exe!__tmainCRTStartup() (0x000000013f59cdc9) + 21 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]
kernel32.dll!UnknownFunction (0x0000000076eb59ed) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x0000000076fec541) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x0000000076fec541) + 0 bytes [UnknownFile:0]