I get an assertion failed error and cannot open my project

Development Programming & Scripting
1

I’m getting an Assertion failed error and can’t even open the project. I’m guessing the animation blueprint causes this issue, but I don’t know how and why

i’m using unreal engine 5.2

Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Public\Containers\Array.h] [Line: 752] Array index out of bounds: 0 from an array of size 0

UnrealEditor_Engine
UnrealEditor_Engine
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UnrealEditor_AnimGraphRuntime
UnrealEditor_AnimGraph
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kernel32
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2

I assume it’s a problem related to the number of cores in your processor and its speed. I have an Intel I9 13900fk. If I leave it at maximum power, I also have this problem. In other words, if you leave it in the Intel(R) Extreme Tuning Utility, download it to test:

In my case, what “solves” the I9 13900fk is:

Download the Intel(R) Extreme Tuning Utility, open the program and:

Performance core ratio (55x) lowers it to 50x. (of course, it depends on your processor, try lower values)

Efficient core ratio (43x) lower it to 40x (of course, it depends on your processor, try lower values)

Apply and try to start Unreal 5. It works here. The problem is that every time you restart, you’ll need to change this in the app.

The 13th and 14th generation i9 processors seem to have some kind of defect that when used close to the maximum, the UE5 crashes, so lowering the values ​​has been a problem for a long time and it surprises me that no one bothers to solve it.

Some motherboards also seem to come from the factory with the wrong configuration. Research this if it doesn’t work.

I hope this helps.

Cheers

Locaster

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