Yes, that is what I did. It shows me the preview but when I click on
"Merge" nothing happens.
Are you Merging to HDR or PANORAMA ?
A merge to HDR creates a new DNG file (in addition to your 'three') but it often does not look any different. If you try to develop it you will see you have more latitude for adjustments. (eg 10 stops of exposure!)
A merge to PANORAMA needs some 25-30% overlap of the images to be successful, and works best from originals that have not been adjusted/edited in the Develop module first.
Do you have your "Sort" options set to "Filename" below the Grid view ? so that the new merge file shows visible beside the originals.
The process is very slow with large files!- Do you see the 'Progress Bar' near your identity plate at top of window?
Yes, I was merging to HDR. I found the DNG file at the end of the
photostrip. I was looking for it next to the images I was merging. My
mistake. Thanks for your help.