Null | Coreerrorsopen Failed Mortal Kombat New

A error means the engine tried to access a core configuration object, but that object was empty (null). “Open failed” indicates the game couldn’t read a necessary .ini or .cfg file.

Have another variation of “coreerrorsopen failed”? Screenshot it and post on the official WB Games support forum—mention “null core” for faster triage.

If you’ve landed on this page, you likely have just installed a new Mortal Kombat game— Mortal Kombat 1 (the reboot) or MK11 —only to be greeted by a cryptic error box that reads something like: or "Fatal error: CoreErrorsOpen failed – Null core from stream" This error typically appears at launch, before the game even shows the logos, or crashes immediately after the splash screen. It is not a standard Windows error; it’s an internal Unreal Engine 3 or 4 error (depending on the game) related to how the game reads its core configuration files.

→ (And by that, we mean finish the error.)