Major problem: I can not export NEF files from Lightroom

Question

This is just plain weird: I can't export NEF files from Lightroom 2. I can export any other file format, but not NEF. With Lightroom 1 this was no problem.
It makes no difference whether I choose the export command with my mouse, via the menu or with a key stroke - nothing happens.
Lightroom version 2.0
Camera Raw version 4.5.0.175
Camera Nikon D3
Photoshop CS3 version 10.0.1
MacOsX version 10.5.4
I've called Adobe, and they simply don't know. I have reinstalled Lightroom 2 with no succes. Restarting, repairing permissions, nothing helps.
Any ideas will be greatly appreciated.
Marsel

Answer 1

Marsel, your language is confusing, First, you cannot 'export' NEFs to PS. You can send a copy there from within LR as a tif or psd.
Exporting per se takes place through the Library module under the Export function. When Nef's are exported by choosing 'original' in the export dialogue, the file is the 'original' NEF accompanied by an XMP. That Nef, if opened directly in PS from your file system should appear in the Camera Raw window, where you can make whatever new edits on it you want or change the original adjustments you made in LR. Then, once you open that file in PS from the Camera Raw window, any further work you do will be pixel editing. That work can then be saved in a number of formats, but not as a NEF.
Transferring files to PS from LR for editing is another matter. That sends a copy of the original NEF, including LR adjustments to PS as either a Tiff or a PSD (your choice via the dropdown). After you have edited that Tiff or PSD in PS and hit save, it will send a copy back to LR as a Tiff or PSD, which will appear next to the original nef.
These procedures work perfectly on both my windows 32 and 64 bit machines with LR2 and 2.1. with all my NEFs from several camera models.
When you say 'export' do you really mean sending a copy to PS or do you mean 'Export' as LR defines that term?