Assertion failed: (Index >= 0) & (Index < ArrayNum)

This is for the Github Promoted branch (i wasn’t able to select the version from the dropdown box).

This error happens on project launch, or clicking on the content folder, or compiling with setting a spline point closed loop, other engine versions have worked flawlessly.
(I assume its not just stable yet? however, ill report this bug anyway?)

[2016.10.06-15.56.58:139][435]LogWindows:Error: Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:c:\unrealengine-promoted\engine\source\runtime\core\public\Containers/Array.h] [Line: 634] 
[2016.10.06-15.56.58:139][435]LogWindows:Error: Array index out of bounds: -1 from an array of size 0

Here is the full log file:

I have now tested this with the Github Master and Promoted versions. Still the same results.

Also to note: The crash closes everything.

Hey FanaticNinja,

Sorry for the delay.

Based on your logs, it definitely looks like this crash is related to splines. Have you been able to reproduce it in a clean project? If so, can you please provide a detailed list of repro steps that I can use to reproduce the issue on my end?

Thanks for the reply, I have been able to reproduce this in a new empty project.

It is as simple as this picture below. Enabling the closed loop in a spline via blueprint, OR the properties panel of the spline component itself, crashes.

This happens on construct or event begin play.

Hey FanaticNinja,

I’ve been able to reproduce your issue, and have entered a bug report which you can track here: Unreal Engine Issues and Bug Tracker (UE-37449)

Thank you for your report.

Have a great day