Install_failed_older_sdk - Error Message

I am trying out the basic 'hello world' program on my LG Thrive phone that uses Android 2.2.1. I have used an API level of 8 for the application, but still get the above error. An

Solution 1:

If you are installing the apk on a phone using the shell, and you have already checked wheter you compiled it to a correct target (Api 8 o lesser), create another emulator to the Api 8 and try to compile it. If it fails, you are not configuring it correctly.