Hi Quinn, Absolutely yet. We use productbuild and pkgbuild to make our installer.

Hi Quinn, There is no crash report whatsoever. We know that the FBA is launched as we see it in the Activity Monitor and after a few seconds or so its terminated or quit (?). One work-around we've asked our users to do is to add the FBA as a login item (so its launched automatically). And this work-around works but its getting difficult to tell users to do this as this odd behavior never existed before with macOS.

Thanks Quinn. Will proceed and let you know what we find.

Hi Quinn, We implemented your suggestions and got an extremely useful log of the specific calls that are failing and returning an error. Our code is terminating as we fail to write some critical information into a file that is required by our code. We're looking into whether its a bug on our side or there are some change we have to implement. Thanks.