Project Crashes on Launch - 4.26.2 Opened Fine in 4.26.1

Hello,

A project we have spent months on was opening fine in 4.26.1.

However, we have upgraded to 4.26.2 and are greeted with the following error when opening the project.

Assertion failed: Index>=0 && Index<NumBits [File:D:\Build\++UE4\Sync\Engine\Source\Runtime\Core\Public\Containers/BitArray.h] [Line: 1256] 

It appears we can not revert back to 4.26.1 via the Unreal Downloader.

We have tried the follwoing:

  • Starting a fresh 4.26.2 Project and copying our Content folder to see if there is an item causing the crash (none appeared)
  • Removing the Saved/Config Folder Contents (same issue)
  • Setting " r.SkinCache.CompileShaders=True" to False in the Config/Default Game INI file (Same Issue)

Any suggestions would be much appreciated!

Hello,

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Thanks