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Unreal Engine "Launch" uses outdated/broken level.

I've got a couple of levels set-up in my project and all of them work perfectly fine whenever I play them from the Selected Viewport (including level transitions etc). However when I package my project or try using the Launch button all of my levels are wrong, there's stuff missing in my blueprints and level so I assume it's outdated rather than broken. I've tried re-cooking all of the content, saved all levels again and such. But no matter what I do it always launches/builds with the same broken content.

Can anyone help me on how to continue?

tl;dr: Game works fine in editor, uses outdated/broken files when deployed.

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asked Mar 24 '15 at 12:27 PM in Packaging & Deployment

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PeppeJ
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Hi PeppeJ,

Are you still seeing this issue? Have you updated to the newest version of the editor? We are at 4.7.4 now.

If you update and you are still seeing this issue, here is one thing to try. There may be old data that has not gotten properly deleted at some point, and here is what to delete to try and fix that. In the Engine folder, delete the DDC (Derived Data Cache). In your project, delete the Intermediate, the Saved, and the Binary folders.

When you next try to package it will take considerably longer as the shaders will need to newly compile, but this should get rid of any old or corrupted files that haven't gotten deleted.

Thanks very much!

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answered Apr 03 '15 at 08:58 PM

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