New Camera won't start, and other problems.

Feb 5, 2013
Version of MIUI: MIUI 4.1 - Build V [1.23.13]
Which i got from this thread:

Phone: Verizon Galaxy S3 SCH-I535 VRBLK3

When i click the camera app, it says "Camera error" / "Can't connect to the camera" and then closes when you click ok. And then I try to take a screen shot of it and this happens:

Another thing is that i installed a theme, but some of the buttons and lock screen are still in Chinese. (This is not a big deal because there are other themes that work just fine)

And another problem that I ran in to was when I was trying to install an apk from the sd card and I couldn't click on the install button. It just wasn't clicking.

I have tried rebooting and clearing cache.