Sorry, no answer to your question, but I'm curious how you had X4 to show thumbnails? An old set of CorelDraw 9 (!) clipart shows up as proper thumbnails, but ever since installing X4, I have to use the PDF "book" to view X4's clipart. Right now it's just a WordPerfect X4 icon (despite the fact I've several times made CDX4 the default program!).

I guess that's really what you just asked, so guess I'm wondering the same question.