Syslinux - Oct 2004 - SYSLINUX based Antivir Boot-CD does not start

Hello,
When I'm trying to burn a  boot CD  from inside the 
Antivirus-Profi-Paket 14.0.2 by G DATA Software AG my  system  is every 
time freezing  as soon as the status message "The CD is being fixed"
is
displayed.

Trying to start with that CD I get the following messages:
Boot from CD
    1. FD 1.44MB  System Type- (0F)

SYSLINUX 1.45 1999-06-14   Copyright (C) 1994-1999 H.Peter Anvin



                                              boot:
Loading rootimg.gz ......................
Loading linux..........
Boot failed: please change disks and press a key to continue



A comparison of this "failure" boot CD with another one, which was 
created by the same program and working faultlessly on my PC showed that 
both have the files linux.boo and boot.catalog and
the folder avplinux.

The guys from G DATA resp.TANDEM couldn't tell me what to do.
Google and its groups also didn't know.

Can anybody tell me, what's going wrong or even knows a solution for the 
problem?

TIA

Hans