Macbook OS build packaging error with Macbook Pro

Development Platform & Builds
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Hi,

I got the below error when trying to package for Mac OS with a Macbook Pro (Catalina OS) in UE4 (v4.25).

“Sytem.BadImageFormatException: Invalid field signature 1, expected 0x6 but got ffffff87”

I started with the standard UE4 Third Person Template, package for Mac and no problem.

Then I Bridge imported Megascan’s Japanese Komainu Statue, and tried package for Mac again, and the error occurs.

Below is fuller description of error from UE4 log:

UATHelper: Packaging (Mac): Sytem.BadImageFormatException: Invalid field signature 1, expected 0x6 but got ffffff87

UATHelper: Packaging (Mac): File name: ‘UE4Rules’

PackagingResults: Error: Unhandled exception: System.Reflection.ReflectionTypeLoadExeption: Exception of type ‘System.Reflection.ReflectionTypeLoadExeption’ was thrown.

Any insights to solve this error will be greatly appreciated.

Thanks in advance :slight_smile: