Syslinux - Jan 2005 - local: can't open local

Trying out ISOLINUX and have a question about the append line.  Here is my .cfg

display isolinux.msg
timeout 100
default linux
label linux
  kernel vmlinuz
  append initrd=initrd.gz root=/dev/ram rw local

My cd seems to boot fine on one computer and it ran /bin/init and everything was
good.  On another computer after freeing unused kernel memory the following
error comes up

local: Can't open local

My apologies if this is not syslinux specific enough but I've googled long
time and I'm not sure what this local option on the append line is.

Thanks,
Dustin