create a project targeting to windows phone silverlight 8.1 then failed to deploy on real device, but emulator works.

Hello, 

I am upgrading an old project targeting windows phone 8.0 (works fine on real device) to 8.1. the project failed to deploy on real device, but works on emulator. the error is:

Deployment optimization failed due to an invalid assembly. Rebuild your source projects and try again.

I also found an warning:

Severity Code Description Project File Line Suppression State

Warning No implementation file was provided for the .winmd file ‘C:\Program Files (x86)\Microsoft SDKs\Windows Phone\v8.0\ExtensionSDKs\CoronaLabs.Corona.Framework\16.0.2938.0\References\CommonConfiguration\neutral\OpenAL.winmd’. To generate registration information in the app manifest, specify the ‘Implementation’ metadata on the .winmd reference item in the project file. xxxxxxxxx

does anyone know how to fix this?

thanks!

Unfortunately, we no longer support Windows 8 builds.

Rob

thanks for the information, Rob.

Unfortunately, we no longer support Windows 8 builds.

Rob

thanks for the information, Rob.