I recently brought my first android phone, a HTC EVO 3D and I love it compared to my 3gs. But there is a problem. When installing a third party app, it goes to the permissions page and when I click install, nothing happens. It appears as of the install button is greyed out (or grayed out, if you have no idea what I am talking about). But the cancel button works. I have the right settings for installing third party apps, because it worked for a while after I brought the phone. It appeared to stop working as soon as I moved the Grand Theft Auto 3 app onto my micro sd card. Help would be greatly appreciated.