This just happened this morning and I am stumped.

When I go to save a few photos for the web I get an error message in Photoshop that says.
"Could not complete this operation because an assertion has failed".

Never had any issues saving for web in 12 years and 10's of thousands of photos and files. It is a regular photo one of my own downsized to normal perameters (500 pixel wide) a 38 kb

What might this be referring to.

Thanks, Dean