I damaged some of my NEF-files by using a script using ExifTool on subdirectories: I copied the exif-information from the original JPG to created JPG, using "-tagsFromFile -overwrite_original_in_place". Unfortunately I did overlook that the ad-hoc-script copied to NEF as well.
Somehow the makernotes or whatever seem to be scrambled/removed, so that the higher-level-programs like AdobeRaw/Adobe DNG Converter, RawTherapee or RawDrop are stumped. RawTherapee just crashes on opening the file, CS4 tells me that it "Could not complete your request as it is not the right kind of document."
It is not a tragic accident, as I already did create colour-corrected final JPG versions, but it unnerves me. Other programs like XnView and IrfanView still get along fine, I guess that they apply some inbuilt default. Picasa on the other hand produces garbage, as RawDrop does: pictures are extremely dark.
Is there a solution to this?
Concerning Backup: As the NEF still looked fine in XnView I did not notice them being damaged until after I overwrote the backup. Wanted to have a look at the capabilities of ViewNX concerning NEF ... and ViewNX did display nothing.
Example: See here
EDIT: PS: I already tried removing all EXIF, did not help. Sorry, forgot to mention.