D800 and LR4 question
This really isn't a D800 question is it?
As such have you tried seeking help via Adobe?
Open Lightroom and under the Help menu, click 'Lightroom Online...'
You will be taken to the Adobe Photoshop Lightrrom 4 site where you can use their forum and/or other means to address this problem.
Sorry I couldn't directly answer your question.