Hi Andrew,
 
> That an Apache FOP issue, rather than anything to do with Saxon, so
> you should really raise it on the FOP specific list, or possibly the
> xsl-list.  If you don't need an auto layout, then switch to fixed.

Thanks, will do. Although I'll admit, I'm still not sure why the warning might cause this exception within an applet but not on a standalone module.
 
The only layout setting in the xsl is:

<fo:layout-master-set>

      <fo:simple-page-master master-name="my-page">

          <fo:region-body margin="1in"/>

      </fo:simple-page-master>

</fo:layout-master-set>
 
& table on the other hand sets the body attribute (with rows & cells within the body), there's no "auto" setting.
 
Regards,
Kamo