Not sure how to describe this!

As my title suggest:

I have a photo, 2000x1500 @ 300 dpi. I cropped the photo.

When I cropped the photo, the canvas dimensions were 9.367inx7.68in.

I then loaded a blank background image and set the canvas size to the same dimensions.

I then copied my Cropped image and dropped onto my new background (canvas dimensions the same).

Now when I view the photo (nero or image viewer), I get white space above and below the photo. Yet when in Adobe, not white space.

What am I (did I) do wrong?

Thanks.

Hello,
Just can't figure out why copy cropped photo onto blank background?
Just save it as it is under differnt name