Hey Dada...
Found that issue as well, the preview list of images come up as a Red X, instead of giving you thumbnail versions of the pictures. The issue was caused by a setting in the Preferences settings area.
Going to the 'Options' drop down menu, then to 'Preferences', on the 'Thumbnails' tab, make sure you check and enable "Make thumbnails automatically".
Then changed folders and change back and it will automatically make thumbnail versions of the pictures for you. (took a few minutes to remind the setting).
BTW - your initial 'Subject' really gave no clue to the issue you were having, so won't help the next guy looking for this problem.
Frolin
