Getting "Package file not signed correctly" error

Hi!

Just published my first game in the Google Play store. When I try to install it from my device I get a “Package file not signed correctly” error. I had a test apk on the device installed before but that is uninstalled. I’m using

Java 7 Development Kit as instructed here: http://docs.coronalabs.com/daily/guide/start/installWin/index.html#java-development-kit-setup but on another page it says that Java 6 must be used: http://docs.coronalabs.com/guide/distribution/androidBuild/index.html

Does it need to be v6 to work on Google play? Any thoughts? Thanks!

FYI, I tried with the Java 6 version and it worked.

FYI, I tried with the Java 6 version and it worked.