...........OK! I did go there originally, but did'nt want to fool with the "stock" setting of : 2048 KB....
When I UPPED it to 3300 KB the other thumbnails showed up!
I right clikd on the thumb, and saw they were over 3 MB....that was the problem, and you guys solved it!

Thank You VERY MUCH! I will note this solution for future reference.
I will mark this as {SOLVED}, and tell the client to make SURE she checks her GEOMETRY (resolution) in the CAMERA settings for "PC" which could be around 600x to 1200x resolution or so. Camera MFGs seem to have gotten away with NO STANDARDS for the resolutions in cameras, which tend to be confusing to the average user anyway. The OWNERS MANUALS are a JOKE, at least ones i've seen with Canon, nikon, kodak, etc. explaining the picture size with computers. The FUNCTION and MENUs are all different. Some have PIXEL size and others have M1, M2, M3 etc..some have actual resolutions...

I believe the actual
PICTURE SIZE is THE MOST IMPORTANT MENU FUNCTION NECESSARY with these new digital wonders...try to find it on
PAGE #1 of ANY manual.

Maybe this is WHY a good photoshop type program is so important - one can fool with the pics in there after a mistake.
For the record, here is a simple description of digital camera settings scenario :
http://www.sphoto.com/homedd/megapixels.html...and this from WIKIPEDIA :
"A megapixel (MP or Mpx) is one million pixels, and is a term used not only for the number of pixels in an image, but to express the number of image sensor elements of digital cameras or the number of display elements of digital displays. For example, a camera with an array of 2048 × 1536 sensor elements is commonly said to have "3.1 megapixels" (2048 × 1536 = 3,145,728).
An image that is 2048 pixels in width and 1536 pixels in height has a total of 2048×1536 = 3,145,728 pixels or 3.1 megapixels. One could refer to it as 2048 by 1536 or a 3.1-megapixel image."This setting makes a pretty decent 5x7 photo.
Maybe this will help somebody.

Thanks again.
JN.