Hi again, i'm sorry for the late, this is the error i get: -release-sign: [echo] Signing final apk... BUILD FAILED C:\adt-bundle-windows-x86-20130219\sdk\tools\ant\build.xml:1128: The following error occurred while executing this line: C:\adt-bundle-windows-x86-20130219\sdk\tools\ant\build.xml:1140: Value for 'keystore' is not valid. It must resolve to a single path Thanks in advance.