> But it is the original one and the only one that I have used. I think this error come by the new version of MobiOne because in older versions, google play gave no error.
1) What is the exact error Google Play is giving you?
2) Google Play requires all updates to an existing app be signed with the same certificate as the original app. Are you explicitly providing a certificate to the build wizard when creating your project for android?
3) Can you provide us the original apk file you uploaded to google play to analyze? And we will need the newest version that is causing an error as well as the signing certificate.