Hi there, I filled all the appropriate information on the build box and exported the package> opened it from eclipse > exported signed application package and when i check it on my device it's trying to connect to google play service and getting an error message stating sign in error. I was searching online and i came across i need to add game service id in strings.xml ? i try to find the file in eclipse but i cannot find it so can you please help me out as i'm stuck in this thing. i'm using a macbook not a pc. Thanks in advance.