cs5 one-on-one lesson01 mcclelland boys

How many times must I log in and state the problem before this system accepts the post !!!!!!

When I attempt to load the photos for lesson01 in the file mcclelland boys, 7 are not shown and there is a notice that they are "hidden." They show up fine in the regular CS5. I can make all the "hidden" photos, except the dng photos, appear in bridge by renaming them psd. This problem does not exist in the other lessons.
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