DSLR Camera Lens not opening all the way?

Ok, so recently my camera has been not working right. When I put my lens on my nikon d100 the other the day, it was messed up. I couldn't see clearly out the camera, and then when I would try to take a picture, the light next to the lens (it blinks when it's to dark) starting blinking. So I went outside in the sun with no clouds, and that light still kept blinking. When I looked at the lens I noticed it wasn't open all the way. I called nikon, and they had me reset some settings, go outside. Etc. So what could be wrong?

Sounds like you haven't seated it properly. Have you tried removing it and putting it back on? Have you looked at the contacts? They could be messed up. If so, you will need to send it to Nikon, which is what I suggest.