I am trying to update an application in my developer Console , but this is the error I am getting when trying to publish it after uploading the apk.
The application could not be saved. Please check the form for errors.
I had the same problem and figured out what I should do. If you click Save as Draft it will take you back and show you the error. In my case it was the target SDK version being lower than what was in the previous version of the app.