[Q] Camera button does not shoot, Just focuses!

Hi everybody

:confused:
I have a xperia x2 phone and it was working great with some midifications on it. but suddenly (without any events) its camera went crazy and it just focuses now! (Pressing it does not shoot or launch camera app.) I hard reseted the phone, updated with SEUS and even gave it to a repairman but it's not fixed yet.
I think it's a registery problem made by AEbutton plus. Can anyone help me to fix it?...

Thanks :)