Quick answer: Godot 4 export template version mismatch with editor producing broken builds? Templates must match the editor exactly - download from the same release.
Editor 4.3.1; templates 4.3.0; build appears successful but runtime crashes.
Match versions
Editor and templates from the same release page.
Or use Custom Templates
Pin exact builds. Reproducible.
Validate on first run
Built game checks template version. Mismatch = warn or refuse.
“Version mismatches are silent. Validation makes visible.”
If your team has version drift, the validation hook is the cure. Document.