Error uploading air application to Apple

I am getting an error trying to upload an app to the iOS store. 

The application was developed using FlashBuilder 4.7 and Flex 4.11.0.

ERROR ITMS-9000: “No architectures in the binary. Lipo failed to detect any architectures in the bundle executable.” At SoftwareAssets/SoftwareAsset (MZItmspSoftwareAssetPackage)

Does anyone have any ideas as to what this error is?  Any help would be appreciated.

Thanks.