When Nell asks what the other girls are watching on the YouTube video, the first initial scene where the girls turn the monitor to show her, the caption for the video says "Camera found in woods". However, when the camera zooms in on the video, the caption now reads, "Crazy possessed girl in woods"
When Nell wakes up and Gwen is gone, her alarm clock is flashing making it seem her encounter during the night caused it to lose power. In the next shot, it is a longer view of the room, and the alarm clock is completely off.
What are the differences between the Theatrical Version and the Unrated Version?
This Unrated Version doesn't include much (which is due to the relatively harmless film). The only really graphic scene turns out to be censored in the Theatrical Version and is now available in its uncensored form. Apart from that, the two little additions not related to censorship are rather pointless. In total the Unrated Version runs approx. 45 seconds longer than the Theatrical Version and a detailed comparison between both versions with pictures can be found here.