For a particular project, UE5 crashes when I try to start Plai in Edit

Development Getting Started & Setup
, ,
1

For a particular project, UE5 crashes when you do the following:

1.tyr to start Play in edit
2.try to check “Maps & Modes” in Project Settings
3.try to data validation

The crash report says this:

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000030

When I was working on materials, this problem suddenly started appearing.
Until then, Play in Edit was also working properly.
I don’t remember changing any special settings.

This problem does not occur in other projects.
Copying the .ini file in the config folder of the other project did not improve it.

Please tell me how to resolve.
Thank you.

2

Hey there @k-sato628! Welcome to the community! Memory read access errors like this are hard to diagnose without much more context, but if it did occur from a material issue, the first thing we will try is to wipe caches.

First back your project up safely. After that’s done, delete both the Saved and Intermediate folders in your project’s file structure. These will regenerate when the project is launched. If that fails, can you go into your DefaultEngine.ini under Config in you project directory and change the starter map to another map in your project to see if it’s just the map that’s corrupted.

The line to adjust look like this:

[/Script/EngineSettings.GameMapsSettings]
EditorStartupMap=/Game/ThirdPerson/Maps/ThirdPersonMap.ThirdPersonMap