Game Works in Editor but Crashes After Packaging (UE5)

Development Programming & Scripting Blueprint
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Hello everyone,

I’m currently developing a project in Unreal Engine 5, and I’m running into an issue where the game works perfectly fine in the Editor and Play-in-Editor (PIE), but it crashes after packaging.

Here are some details:

  • The project runs without any errors inside the editor

  • The crash happens immediately after launching the packaged build

  • I am packaging for Windows (64-bit)

  • No obvious errors are shown during the packaging process

Things I’ve already tried:

  • Checked the Output Log for warnings and errors

  • Made sure all referenced assets exist and are included

  • Tested both Development and Shipping builds

  • Disabled some plugins to see if the issue was plugin-related

I would like to ask:

  • What are common reasons a project works in the editor but crashes in a packaged build?

  • Are there specific logs I should check to identify the root cause?

  • Could this be related to missing assets, Blueprints, or C++ code that only fails in packaged builds?

Any advice or suggestions on how to debug this issue would be very helpful.
Thank you for your time!

1 Like
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Have you tried running in editor, with the output log open in another window? Ideally, try and get it to run with any warnings or errors, then try packaging again.