Yes… also revised single-press-releases.php to single-press-release.php. I thought it would be that simple, but didn’t dawn on me to make the names singular.
Perhaps you should include info on template file names under Custom Post Type Archives in the plug-in settings if/when you update the plug-in again. Since the names next to the checkboxes are all plural, I figured the files names should be plural when I moved onto the special template file link you have.
I really appreciate your help and will recommend your plug-in to others.
