I inserted a memory card containing several RAW image files into my viewer, but I cannot see any of the RAW file thumbnail images after I select Browse CF Memory Card or Browse SD Memory Card. What happened to the files?

• If a RAW image file is not supported, you may see a question mark icon instead of your thumbnail, or you may see no icon at all (if your Unsupported Files setting is set to Hide).
  
  If you want to see icons for all files (including unsupported ones), follow these steps:
  1. Select Settings on the Home screen and press OK.
  2. Under View Mode options, set Unsupported Files to Show.
  The P-6000 supports RAW image files with the following file extensions:
  • .arw
  • .cr2
  • .crw
  • .dng*
  • .erf
  • .mrw
  • .nef
  • .orf
  • .pef
  • .raf
  * The viewer supports only the JPEG preview embedded in .dng files.