Crashes when using FM drawings and saving to XML (DITA)

We're having a strange problem with FM 8.0p273 and DITA concerning FM-internal graphics. We would like to create some of our images using the FM drawing tools, so we insert a <fig> element and draw a graphics frame into the <image>'s anchored frame into which we draw our graphics. If we try to save the topic to XML, FM crashes with the message "Internal error 8004, 6343724, 8484240, 0. FrameMaker has detected a serious problem and must quit. [...]".

Now, the default R/W-rules for DITA topics only contain a "writer facet default" rule which apparently applies only to <image> elements with exactly one facet. However, the Structured Application Developers Guide states:

"However, if the author used FrameMaker graphic tools to create the objects in the graphic element, you want the file written in QuickDraw PICT format. To accomplish all this, use the following rule:
element "graphic" {
is fm graphic element;
writer anchored frame export to file "$(docname).pic" as "PICT";
}
"

I tried this rule (with the correct element name, of course...), but it makes no difference; FM still crashes with the same error message.

Does anyone experience the same error, or may this be some kind of misconfiguration in the R/W-rules?