Jpeg images will not place or view

I have a site done in Classic. I opened the project for the first time on my new Studio Mac. All of the jpegs in edit mode show as question marks. In preview they do not appear. I deleted the image and placed it again out of the resources window I get another question mark. Putting a new image stack on the page and I get the same result. Also dragging the image from the folder on my hard drive yields the same result.

Also, any png files in the project view correctly.

Opening the jpegs and saving them fixes the problem. I then need to relink the new jpegs in the resource screen and then replace them in the project. Is there a more efficient way of doing this than opening/saving/relinking/replacing all the images?

Thanks.