Hi , I get crash after doing animation retarget or after replacing an animation to a different skeleton. is there a solution for this?
Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Containers\Array.h] [Line: 758]
Array index out of bounds: 0 into an array of size 0
The error youāre running into with the āArray index out of bounds: 0 into an array of size 0ā is usually indicating something is being called that doesnāt exist. When replacing an animation Iād check to make sure nothing is calling for your old animation file name/path etc.
Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Containers\Array.h] [Line: 758]
Array index out of bounds: 69 into an array of size 69
I was having this same issue. I had a set of animations that I had retargeted from the UE4 mannequin onto a Mixamo skeleton in UE 5.3. After I upgraded the project to UE 5.4.1 it would crash each time I tried to open one of them in the animation sequencer.
I tried two things, not sure which of them fixed the issue but I can now open those animations without crashing.
Right click on the folder containing your retargeted animations and choose āUpdate Redirector Referencesā, delete any unreferenced redirectors. I also did this on the folder with the original animations.
Right click on the folder containing your retargeted animations and choose āValidate Assets in Folderā.
Same issue here with mixamo! thanks for the heads up. I tried the fixes, but I still crash unfortunately. Iām assuming itās a bug. I also reproduced this with an epic skeleton.
Edit: one last update. It appears to only happen when retargeting animations from the UE4 mannequin. I successfully retarget animations from the ue5 mannequin to my rig and I have no issues opening the animations.
I donāt even get to Retarget the animations ! Every time when I Right Click, and select Retarget Animation, it crashes ! Itās definitely a bug, because few days ago I was doing this without any problems, but now ā¦ Iām getting too frustrated ā¦
Every time when I Right Click, and select Retarget Animation, it crashes ! Itās definitely a bug, because few days ago I was doing this without any problems, but now ā¦ Iām getting too frustrated ā¦