Just upgraded an app from V12 to V13 - text change in help only. Works fine.
Go up upload it to dev. console and it will not publish the new APK, says:
"This configuration cannot be published for the following reason(s): Version 12 is not served to any device configuration: all devices that might receive version 12 would receive version 13."
What is it talking about? V12 was published for 40K+ devices, I've just done exactly the same thing to three other apps with no problem, but this one won't have it.
No idea what it means. All I can do is save it as draft.