UE5 Packaged game won't launch (Win)

Hello! Im having some issues getting my packaged build to actually open. The output log only shows a few warnings related to some empty arrays in some blueprints and no errors.

I tried packing both a dev build and a shipping build with the same results, cooking only 2 maps that are required for my testing and double checking other package settings.

I’m at a loss, any ideas?

Here’s my latest “successful” output log: https://pastebin.com/CG1Y5xe9

Update: Testing to ship in development mode and opening the exe prints this to the log: “LogPluginManager: Error: Unable to load plugin ‘ContentBrowserAssetDataSource’. Aborting.”

Turns out the problem was caused by the Flat Nodes plugin. Disabling it fixed it.

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