Ensure you are on version 1.03 or 1.04 to support the latest community mods and DLC packs.
To mod the CODEX version, users often swap the cracked .exe with an original one temporarily to regenerate the Chunk0.arc file. WWE 2K19-CODEX
Many users prefer this version specifically for its compatibility with external tools. Ensure you are on version 1
For backups, check C:\Users\Public\Documents\Steam\CODEX\648580 . check C:\Users\Public\Documents\Steam\CODEX\648580 .