Trouble with gnome-cd and FreeBSD 5.3STABLE

[Juergen Dankoweit]

Hello,

On my system I'm using Gnome 2.8.1 with FreeBSD 5.3 STABLE. The
CDROM-drive is connected to an SCSI-Bus. The permissions are set
correct:
  > ll /dev/cd0
  crw-rw----  1 root  users    4,  12 29 Jan 14:11 /dev/cd0

My user-account belongs to the group "users"

When I start gnome-cd from the "gnomemedia2-2.8.0_2"-package I get the
following message on command-line:

  ** (gnome-cd:1198): WARNING **: Error getting leadout

In the log-file /var/log/messages the following entries are listet:

Jan 29 14:34:26 primergy470 kernel: (cd0:sym1:0:5:0): READ SUB-CHANNEL.
CDB: 42 2 40 1 0 0 a 0 18 0 
Jan 29 14:34:26 primergy470 kernel: (cd0:sym1:0:5:0): CAM Status: SCSI
Status Error
Jan 29 14:34:26 primergy470 kernel: (cd0:sym1:0:5:0): SCSI Status: Check
Condition
Jan 29 14:34:26 primergy470 kernel: (cd0:sym1:0:5:0): ILLEGAL REQUEST
asc:24,0
Jan 29 14:34:26 primergy470 kernel: (cd0:sym1:0:5:0): Invalid field in
CDB
Jan 29 14:34:26 primergy470 kernel: (cd0:sym1:0:5:0): Unretryable error

What's going on there? How can I solve this?
Google wasn't a real help because some people were only talking about
the problem but anybody didn't show a solution. 

Many thanks for your help.

Best regards

Jürgen