GRUB isn't working for bootable CD

[Harmon S. Nine]

Hello.

We are using grub as the boot-loader for a bootable CD.  The boot 
process for the CD uses "el torito" with a primary hard-disk image 
(rather than a floppy image).

For those unfamiliar with the "el torito" method of booting from CD (I 
don't know of any other methods :), it involves storing a hard-disk (or 
floppy-disk) image on the CD.  On booting from the CD, this image is 
loaded from the CD into RAM as a ramdisk, and is temporarily made the 
primary hard-disk of the computer.  Given this, if the ramdisk has grub 
on its MBR and grub is properly configured, the computer should boot as 
it would from the actual primary hard-disk.  Once the boot is complete,  
the ramdisk is deleted and things return to normal.

The version of grub that works in this capacity is 
grub_0.92+cvs20020923, i.e. the one from September of 2002.  All 
subsequent versions do not work (yes, I should have reported this long 
ago), i.e. they always give an "error 18".

Is this a bug in grub, or do I need to change how grub is installed?  If 
it's a bug, perhaps a diff could be done between the 09-23-2002 code and 
the current code ... ? :)

If this bug could be fixed, that would be great, m'kay?  Thaaanks.
We also need to go ahead and fix those TPS reports.

-- Harmon