UE4 Crashes when I try to edit curve. Just started doing this?

Development Programming & Scripting
1

I am new to Unreal Engine so I’ve been practicing with tutorials from Udemy and YouTube. I started a tutorial for an RTS style camera movement from YouTube and half way through I hit a road block. The guy in the video creates a curve in his folder full of blueprints and edits the curve without a problem. I double-click to open the curve editor and hold shift while left clicking to add points and nothing works. I just did all of this with the timeline using a Float Track and I had no problems. After a few tries still no luck. Finally, trying to open the curve editor just crashes UE4.I get the following bug report.

Assertion failed: IsValid() [File:D:\Build\++UE4+Licensee\Sync\Engine\Source\Runtime\Core\Public\Templates/SharedPointer.h] [Line: 890] 



0x00007ffd13873e49 KERNELBASE.dll!UnknownFunction []
0x00007ffcb24ceb46 UE4Editor-Core.dll!UnknownFunction []
0x00007ffcb24d1f28 UE4Editor-Core.dll!UnknownFunction []
0x00007ffcb225e53d UE4Editor-Core.dll!UnknownFunction []
0x00007ffcb21e97b5 UE4Editor-Core.dll!UnknownFunction []
0x00007ffcb21ebaf0 UE4Editor-Core.dll!UnknownFunction []
0x00007ffc7d95eae1 UE4Editor-CurveAssetEditor.dll!UnknownFunction []
0x00007ffc7d95ca85 UE4Editor-CurveAssetEditor.dll!UnknownFunction []
0x00007ffc895932d4 UE4Editor-AssetTools.dll!UnknownFunction []
0x00007ffca46fc209 UE4Editor-UnrealEd.dll!UnknownFunction []
0x00007ffc924f8f17 UE4Editor-ContentBrowser.dll!UnknownFunction []
0x00007ffc924b687f UE4Editor-ContentBrowser.dll!UnknownFunction []
0x00007ffc925021dd UE4Editor-ContentBrowser.dll!UnknownFunction []
0x00007ffc924b460d UE4Editor-ContentBrowser.dll!UnknownFunction []
0x00007ffc924b1027 UE4Editor-ContentBrowser.dll!UnknownFunction []
0x00007ffc92513fa7 UE4Editor-ContentBrowser.dll!UnknownFunction []
0x00007ffc9250264b UE4Editor-ContentBrowser.dll!UnknownFunction []
0x00007ffcfcba0f3e UE4Editor-Slate.dll!UnknownFunction []
0x00007ffcfcc25302 UE4Editor-Slate.dll!UnknownFunction []
0x00007ffcfcc0e5aa UE4Editor-Slate.dll!UnknownFunction []
0x00007ffcfcc01a79 UE4Editor-Slate.dll!UnknownFunction []
0x00007ffcfd8b7f62 UE4Editor-ApplicationCore.dll!UnknownFunction []
0x00007ffcfd8a5c87 UE4Editor-ApplicationCore.dll!UnknownFunction []
0x00007ffcfd8ba609 UE4Editor-ApplicationCore.dll!UnknownFunction []
0x00007ffcfd8a17d0 UE4Editor-ApplicationCore.dll!UnknownFunction []
0x00007ffd1521e338 USER32.dll!UnknownFunction []
0x00007ffd1521dd79 USER32.dll!UnknownFunction []
0x00007ffcfd8bbb24 UE4Editor-ApplicationCore.dll!UnknownFunction []
0x00007ff6ed5d68c4 UE4Editor.exe!UnknownFunction []
0x00007ff6ed5eba7c UE4Editor.exe!UnknownFunction []
0x00007ff6ed5ebb5a UE4Editor.exe!UnknownFunction []
0x00007ff6ed5fe31d UE4Editor.exe!UnknownFunction []
0x00007ff6ed60145a UE4Editor.exe!UnknownFunction []
0x00007ffd13b96fd4 KERNEL32.DLL!UnknownFunction []
0x00007ffd15afcec1 ntdll.dll!UnknownFunction []

I have tried opening curves in other projects, no luck. I have re-installed UE4 and rebooted by computer. Still no luck. This is really stressing me out. Please help. Thanks everyone.

1 Like
2

Hi, having the same problem here, tried to find some already existing threads about this but only found this one.
Each and everytime I try to open a curve asset the loading bar comes up and freezes at 75% and then crashes the editor.
I opened the task manager to see if it was a memory problem, but it doesn’t seem like it is.

The crash report :

Assertion failed: IsValid() [File:D:\Build++UE4+Licensee\Sync\Engine\Source\Runtime\Core\Public\Templates/SharedPointer.h] [Line: 890]

UE4Editor_Core
UE4Editor_Core
UE4Editor_CurveAssetEditor
UE4Editor_CurveAssetEditor
UE4Editor_AssetTools
UE4Editor_UnrealEd
UE4Editor_ContentBrowser
UE4Editor_ContentBrowser
UE4Editor_ContentBrowser
UE4Editor_ContentBrowser
UE4Editor_ContentBrowser
UE4Editor_ContentBrowser
UE4Editor_ContentBrowser
UE4Editor_Slate
UE4Editor_Slate
UE4Editor_Slate
UE4Editor_Slate
UE4Editor_ApplicationCore
UE4Editor_ApplicationCore
UE4Editor_ApplicationCore
UE4Editor_ApplicationCore
user32
user32
UE4Editor_ApplicationCore
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
kernel32
ntdll

Tried everything you listed as well, and it doesn’t work.

3

Hi, same problem here, started at about the same time. on 4.25 editing curves used to work as expected, then one day attempting to open the curve editor started crashing the engine, and never worked again since. Tried reinstalling etc, no luck.
I went on using curves as usual in 4.26, but today that was messed up too - tried to edit a curve I had no issues with before, but the curve editor just doesn’t show up and the curve asset greys out in the content browser. At least it doesn’t crash the editor, but I cannot use curves now :frowning:
Help please…
Sequencer curve editor still works fine.

4

This happened to me in UE5, too. In my case it was, that I closed all of the curve tabs inside the curve editor. Maybe the curve editor doesn’t know what to do then and crashes. After trying to reopen the curve, it crashes, because it remembers the layout of closed curves.

I could fix it by going to Window - Load Layout - Default Editor Layout. Hope that helps. :slight_smile:

5 Likes
5

Thank you Ferhat, This solved hours of troubleshooting. Adding more info for google.

UnrealEditor_CurveAssetEditor

Assertion failed: IsValid() [File:D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Templates\SharedPointer.h]

1 Like
6

Oh gosh, this happened to me long time ago and I couldn’t find a solution so I reinstalled the entire engine lol.
Thank you so much for this useful information!

7

THANKS A LOT !!! Found the right tip :smiling_face_with_three_hearts: