Further... lightning fast responses from Art, Fred and Paul: Art: might have been a 'Save FrameImage with imported graphics' option issue. However, this is unlikely, as I don't think I've ever enabled this option, either in FrameMaker 6 or 7.
Fred, Paul: this is normal for graphics imported by copy (i.e. I goofed) So I guess I must just have imported these three files by copy accidentally in the original book. I've identified the originals and re-imported them by reference. That leaves me only with the question of why the file errored today. It might have been a transient memory glitch. Or maybe it's because it's Tuesday. It's been quite a day. -- Steve