Acrobat Pro DC no longer converts jpg files
Using Pro DC (latest version) on Mac OS 10.11.5. Just last week, I was able to use it to convert a jpg to a pdf, but it looks like now there has been an update that no longer supports this. I get the following error:

I've opened the file in PhotoShop and resaved as a jpg to just to eliminate any corruption issues, that didn't change anything. Sure, I could save directly to PDF out of PS, but I have to combine multiple PDF & JPG files on a regular basis into a single PDF, so resaving out of PS is not an option. Am I missing something?