Google investigating 'Package File Invalid' errors at Google Play

Seeing Package File Invalid errors from Google Play? It's not just you It seems that some users are seeing an error when trying to install or update applications from Google Play on their Androids. Instead of the expected behavior -- tap a button and install or update an app -- users are able to download the package but during install are fed a "Package File Invalid" error. There are many user fixes floating around out there, ranging from clearing app data for Google Play to removing the proxy a...