I am receiving the above error when launching my application in version 3.1 in my tablet

It works fine from 2.1 to 2.3 on phones

The code it complains about is as follows:

@Override
protected void onCreate() {
    // Other logic here
            // ....
    showDialog(Constants.INTRODUCTION_DIALOG);
}

What is the problem here? I see other related threads but I don't see one similar to my problem on launch.

Thanks