[4.27.2] Can't save any structure

Hello, for a few weeks I can no longer work on UE 4.27.2 since I have a recurring error that happens to me a lot on Structures.

I currently have a personal pc, a business pc, and a pc from my video game development university.

And in any case, I can’t save variables in a structure.

If I close the file, if I close UE, if I run a simulation, everything will be deleted, even saving.

Here is a log that I was able to recover during a save of a value in a structure.

LogOutputDevice: Error: === Handled ensure: ===
LogOutputDevice: Error: Ensure condition failed: OwnerStruct == UserDefinedStruct.Get() [File:D:/Build/++UE4/Sync/Engine/Source/Editor/Kismet/Private/UserDefinedStructureEditor.cpp] [Line: 203]
LogOutputDevice: Error: Stack: 
LogOutputDevice: Error: [Callstack] 0x00007ffdd9f3ba89 UE4Editor-Kismet.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffdd9dc86cc UE4Editor-Kismet.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffdd9d9f0d7 UE4Editor-Kismet.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffdd5294970 UE4Editor-PropertyEditor.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffdc28869e1 UE4Editor-DetailCustomizations.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffdc27e3c23 UE4Editor-DetailCustomizations.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffdc28819ae UE4Editor-DetailCustomizations.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffdc26accda UE4Editor-DetailCustomizations.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffdc2621367 UE4Editor-DetailCustomizations.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe09bb1bf6 UE4Editor-Slate.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe09bb3008 UE4Editor-Slate.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe09ab1114 UE4Editor-Slate.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe09902112 UE4Editor-Slate.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe09965087 UE4Editor-Slate.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe09958756 UE4Editor-Slate.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe2e9cbcc8 UE4Editor-ApplicationCore.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe2e9b92b7 UE4Editor-ApplicationCore.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe2e9ce465 UE4Editor-ApplicationCore.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe2e9b4410 UE4Editor-ApplicationCore.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe59dce7e8 USER32.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe59dce47e USER32.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffdaf507e59 InkObj.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe443110b8 atlthunk.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe59dce7e8 USER32.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe59dce229 USER32.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe2e9cfcd4 UE4Editor-ApplicationCore.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff6abe17621 UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff6abe30fcc UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff6abe310ba UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff6abe340dd UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff6abe45984 UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff6abe4853a UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe5a247614 KERNEL32.DLL!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe5aca26a1 ntdll.dll!UnknownFunction []
LogStats:                SubmitErrorReport -  0.000 s
LogStats:                    SendNewReport -  1.414 s
LogStats:             FDebug::EnsureFailed -  1.509 s

Hello, for a few weeks I can no longer work on UE 4.27.2 since I have a recurring error that happens to me a lot on Structures.

I currently have a personal pc, a business pc, and a pc from my video game development college.

And in any case, I can’t save variables in a structure.

If I close the file, if I close UE, if I run a simulation, everything will be deleted, even saving.

Here is a log that I was able to recover during a save of a value in a structure.

LogOutputDevice: Error: === Handled ensure: ===
LogOutputDevice: Error: Ensure condition failed: OwnerStruct == UserDefinedStruct.Get() [File:D:/Build/++UE4/Sync/Engine/Source/Editor/Kismet/Private/UserDefinedStructureEditor.cpp] [Line: 203]
LogOutputDevice: Error: Stack: 
LogOutputDevice: Error: [Callstack] 0x00007ffdd9f3ba89 UE4Editor-Kismet.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffdd9dc86cc UE4Editor-Kismet.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffdd9d9f0d7 UE4Editor-Kismet.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffdd5294970 UE4Editor-PropertyEditor.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffdc28869e1 UE4Editor-DetailCustomizations.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffdc27e3c23 UE4Editor-DetailCustomizations.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffdc28819ae UE4Editor-DetailCustomizations.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffdc26accda UE4Editor-DetailCustomizations.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffdc2621367 UE4Editor-DetailCustomizations.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe09bb1bf6 UE4Editor-Slate.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe09bb3008 UE4Editor-Slate.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe09ab1114 UE4Editor-Slate.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe09902112 UE4Editor-Slate.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe09965087 UE4Editor-Slate.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe09958756 UE4Editor-Slate.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe2e9cbcc8 UE4Editor-ApplicationCore.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe2e9b92b7 UE4Editor-ApplicationCore.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe2e9ce465 UE4Editor-ApplicationCore.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe2e9b4410 UE4Editor-ApplicationCore.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe59dce7e8 USER32.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe59dce47e USER32.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffdaf507e59 InkObj.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe443110b8 atlthunk.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe59dce7e8 USER32.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe59dce229 USER32.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe2e9cfcd4 UE4Editor-ApplicationCore.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff6abe17621 UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff6abe30fcc UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff6abe310ba UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff6abe340dd UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff6abe45984 UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff6abe4853a UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe5a247614 KERNEL32.DLL!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffe5aca26a1 ntdll.dll!UnknownFunction []
LogStats:                SubmitErrorReport -  0.000 s
LogStats:                    SendNewReport -  1.414 s
LogStats:             FDebug::EnsureFailed -  1.509 s

Solution : Transform is a Structure.

The engine does not like to work on a structure which itself contains other structures, so I deduce that the Transform is a Structure, the same for the class selection.

So use a Simple Location or Rotation instead.