I have had a very strange thing happen with some of my images,. suddenly I have a number of files that will not let me change the infromation in the metadata or change or add keywords. The second strange thing is each of the affected photo are above a grayed out image square that has an .xmp extention on it. I am way behind in my processing and the images affected are from more than two months ago. It is very frustrating. I tried erasing the .xmp files but the cr2 above is erased as well. the only change I have made is a new computer, but the images in question are on the same drive they were down loaded to and the images I have downloaded via my new computer are normal.
Any suggestion on how I can fix the problem?