UE Crashing when changing TargetYaw to UProperty

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#1

Hi,
I was changing the parameter TargetYaw to UPROPERTY(EditAnywhere) and Unreal crashed.
I had it written as UProperty and it didn’t crash but the Editor didn’t show the TargetYaw.
Since I changed it to Uppercase, it keeps crashing every time I try to open it.
Is there any way to go into the code and remove that line?
This is the list of errors that comes up when it crashes.
"
Assertion failed: [File:D:\Build++UE4\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp] [Line: 2507] UObject(const FObjectInitializer&) constructor called but it’s not the object that’s currently being constructed with NewObject. Maybe you are trying to construct it on the stack, which is not supported.

UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_BuildingEscape_7680!UOpenDoor::UOpenDoor() [d:\users\user\documents\unreal projects\buildingescape\source\buildingescape\opendoor.cpp:12]
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_Core
UE4Editor_Core
UE4Editor_Projects
UE4Editor_Projects
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
kernel32
ntdll"
Any ideas?
Sinead

#2

Could you show your header file and cpp?

#3

Here they are:

OpenDoorh
OpenDoorh1043×824 32.9 KB

OpenDoorcpp1
OpenDoorcpp1957×913 49.3 KB

OpenDoorcpp2
OpenDoorcpp2885×442 26.7 KB

Thanks,Sinead

#4

Are you using this component in C++ by any chance?

#5

Hi Dan,
I’m not sure what you mean. Its the same way that the OpenDoor was added as a component in the material, via the Editor.
Sinead

#6

I have deleted the code TargetYaw , CurrentYaw etc from the Visual Studio Code and UE is still crashing.
Do I need to start Building Escape from the beginning?
line 12 in OpenDoor.cpp is showing as the error.
“PrimaryComponentTick.bCanEverTick = true;”

UE4Editor_BuildingEscape_7680!UOpenDoor::UOpenDoor() [d:\users\user\documents\unreal projects\buildingescape\source\buildingescape\opendoor.cpp:12]

Thanks,
Sinead

#7

Probably not then. As in another class or any other code e.g.

class SomeOtherComp : public UActorComponent
{
public:
    UOpenDoor* DoorComp;
};

Or

void USomeClass::SomeFunc()
{
    UOpenDoor* Door;
}

Because the message from your OP suggests you are and that you’re not using a pointer e,g,

UOpenDoor Door;

That is creating a UOpenDoor on the stack which is not allowed for UObject types.

#8

Hi Dan,
No I had none of that code in my code yet.
I had only reached the " Exposing Parameters To The Editor" material in the course.
Do I need to start again then?
Thanks,
Sinead

#9

You could recreate the class (delete files on disk, refresh project files, compile, create), restart the project, or send me your project to see what’s up (File > Package Project > Zip Up Project)

#10

Hi Dan,
I can’t get to that stage, UE loads the game to 100% and then crashes.
I have zipped it in the backend, to 311MB.
How can I share the file with you?
The Upload section only allows jpegs/image files.
Thanks,
Sinead

#11

Just use a host like Google Drive and link it.

#12

Hi Dan, here you go:
I put in the original code that crashed it, line 33 & 34 of header file
https://studentdkit-my.sharepoint.com/:u:/g/personal/d00216814_student_dkit_ie/EaWRHgpuUGZBlAso9lu65CEBlHCSLoYi01dr560e8qhetw?e=fi9kQQ

Sinead

#13
  1. Add the missing semicolon on the end of the class declaration in OpenDoor.h
  2. Delete your Binaries and Intermediate folders then reopen your project rebuilding when prompted.
#14

Hi Dan, sorry I didn’t get this notification for some reason. Will try it tomorrow.Thanks.Sinead

#16

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