Larry, Olaf,
The newest WP8 CoronaCards build that got pushed out now logs Lua runtime errors to the Visual Studio “Output” panel. Plus, it’ll log in both “Native” and “Managed” debugger modes… and with far better performance. Although, still not as fast as iOS or Android, but I think this is as good as it’s going to get; at least when logging to Visual Studio. Anyways, this should make it easier for you guys to debug your applications.