Unreadable DNGs

Hi all -

I have several different cameras and have to use different versions of DNG converter due to added/dropped support. That's all fine.

My question is why Lightroom will read all the DNGs regardless of original camera and Photoshop/Bridge will not.

Specifically DNG files made from the 'RAW' files of a Kodak;DCS14n and Panasonic G2.

Photoshop and Bridge look at these DNGs and say "not a supported image type" Again, Lightroom has no problem.

I have tried running the DNGs back through the DNG converter and no luck.

I've tried two systems:

iMac G5

CS2

and

Intel MacBook

CS4

LR 3

DNG Converter 5.7, 6.3 and 6.4

CameraRaw 6.4.1