XnView Software

Wow, thank you, I installed Ghostscript 9.27, did a restart of XnView and it worked!

I do not have Ghostscript installed, I guess I'll look into that but AI is a very common file format. My expectation is that it would be supported.

I have Settings/Genera/Display All Formats checked but not all images are displayed. In particular AI files, most PSD files, EPS and PDF. The files are for the CS6 version of AI and PS.I'm on an iMacPro running Mohave 10.14.4.
This is a great program, very fast, very flexible, I was happy to pay for ...