When you view the image do you see a padlock symbol in upper corner? If so right click and select unlock.
Also, view the folder in Win. Explorer. Right click and click on Properties. Made sure there is no check mark for read only.
Many thanks for your response.
When I view the thumbnail images in Bridge, there is NO padlock symbol at all. Since I shoot everything in RAW, Explorer and Windows do not display the image itself, but an icon representing the .CR2 file (I shoot Canon). I have also tried the right-click to check the Properties of the files, and there is NO check mark for "read only". I am still at a loss. I sincerely appreciate your help if you can think of anything else.
The padlock will only show in the content thumbnal panel not the thumbnail in preview.
If a no on this reset the preferences. Hold down the Ctrl key and start Bridge. You will get a reset window.