Can you give the text from /isolinux/isolinux.cfg from the cd that you made?
Try to update isolinux, this can help sometimes.
Download syslinux from
http://www.kernel.org/pub/linux/utils/boot/syslinux/.
Extract the syslinux archive to "c:\syslinux\".
To update isolinux for the CD version
- Copy "c:\syslinux\isolinux.bin" to "c:\ubcd\isolinux\".
- Copy "c:\syslinux\com32\menu\menu.c32" to "c:\ubcd\isolinux\".
- Copy "c:\syslinux\com32\modules\chain.c32" to "c:\ubcd\isolinux\"
- Copy "c:\syslinux\memdisk\memdisk" to "c:\ubcd\isolinux\"
To update syslinux for the bootable USB key
- Copy "c:\syslinux\ldlinux.sys" to "c:\ubcd\syslinux\".
- Copy "c:\syslinux\mbr\mbr.bin" and "c:\syslinux\ldloader.bss" to "c:\ubcd\tools\ubcd2usb\".
- Copy "c:\syslinux\com32\menu\menu.c32" to "c:\ubcd\syslinux\"
- Copy "c:\syslinux\com32\modules\chain.c32" to "c:\ubcd\syslinux\"
- Copy "c:\syslinux\memdisk\memdisk" to "c:\ubcd\syslinux\"
Remaster the iso:
If you don't know how to do it, see
http://www.ultimatebootcd.com/forums/viewtopic.php?t=1343.