Post edited 9:12 pm – January 23, 2012 by Bob Rubey
First, echoing David's thoughts, why not AI?
Anyway, if you rotate the tongue elements back to zero, the entire image will scale. Problem solved? Not exactly. You already know that other elements are rotated.
But there's something else of note: The graphic, as is, can be resized… as long as you make it larger.
So I made an assumption that because of both the small size and rotation of the tongue elements that InDesign is unable to reduce the entire graphic in size and thus generated an error. To test, I increased the size of only the two elements that make up the tongue. And sure enough, I was then was able to reduce the entire graphic.
So, I guess I would look for something small and rotated on other problem graphics and see if that is indeed the cause of the errors.
BTW, I really like your illustration. (And the horse doesn't look too bad with a slightly larger tongue.)
Bob