Error Unknown Cook Failure

Hi! I can’t pack for Windows (64 bit), Launch to device works, and it displays this fail:

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Is there any solution? Thank you.

EDIT: I don’t know it that files can help you:
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I’m using the 4.9.2 version. Here, the log file:

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It’s solved. It was a Bluerprint Error.

What kind of blueprint error? I’m having the same problem.

Yes me too! Trying to “Refresh all nodes” and compile all my blueprints.