When importing a single jpeg file using Embedded+Sidecar preview the image shows fine in the import dialog. However, once the import finished LR has the "!Lightroom has encountered problems reading this image" message. If I import with the other settings the import works.
However, if I import at least one CR2 file at the same time I import the jpeg file both come in correctly. I have not tried any other combinations.
Is this a known problem?
Mike
Edit Update: This problem is intermittent. Sometimes I can delete the problem image from the catalog and import it again and it works??