Well I downloaded and installed the (latest?) 'dngcodec_r2_042711.exe' codec today ....and it didn't work.
Windows Explorer used to show a basic 'DNG' icon for each file ...Now it just shows generic 'picture' icons instead. Not a lot of help.
I have win7 64-bit, Lightroom 4 etc. and used the 'Make copy as dng' menu option to generate DNGs from Nikon NEF (raw) files, already present on the hard drive, as I wanted to get away from the cumbersome additional 'sidecar' files generated by the ACR engine but it seems I am stuck with them until someone (Adobe, can you hear this?) comes up with a suggested fix or something.
Anyone any ideas?
Thanks for the link Yammer P... I'll check it out ;-)
30 frustrating minutes later... No luck, just the same pic of sky/mountain/lake when viewed in Win Explorer -and Picture Viewer can't handle it at all. Thanks anyway. Maybe it's my graphics card -but ACR can see dngs so maybe not. Doh!
I think I might give the Ardfry Imaging codec a shot : http://www.ardfry.com/