Raw Help!

[JasonDoyle]

Hi there,
I took a series a photographs at night time, all of them were in RAW - NEF files, I use a Nikon D5000. Most of them are fine but there are a certain number of them If I look at them in Adobe Bridge, the ones that are fine show up with a thumbnail and all of the metadata is detailed below. The ones that are not alright, I get no thumbnail view and the metadata just gives me the file properties. They won't open in Bridge or in Photoshop. Is there anyway of repairing these files? Can I copy the Metadata from one to the other?
Thanks in advance,
Jason.