I shot some 20 DNGs today. After shooting was done, I tried to view their corresponding JPEGs right on the camera, just to check if framing was correct.
But there's a problem - the camera freezes each time I try to view one certain photo. I don't know why, the photo opens up correctly on the computer. The camera freezes, and I can only turn it off by removing the battery. When I try to view the photo, the green activity LED on the camera blinks forever.
Note, however, that my camera was on very low battery while I was shooting, but it didn't power off during shooting (which should mean that files were written to the card correctly).
What could it be - a card error, or problem with CHDK port? I'm currently charging the battery, and I will try viewing that problematic photo when it's done.
EDIT - Problem solved by separating DNGs from JPEGs (changed RAW storage location to A\RAW).