got the app called finger scan lite and it worked great all day long. decided i liked it and wanted to upgrade to it for kicks. the pro version now has me locked out of my phone.... its stuck on the green "please scan your fingerprint" screen. when you hold your finger on the screen, it vibrates x amount of times like its supposed to but it goes to a white button in the center of the screen and wont let me do anything. i tried holding the home button and it will only get me to messaging. anything i do, it keeps going to the white button. tried pulling the battery and powering down, same results. im screwed and need some help fast. thanx!