gnome-obex-send problem

Hello,

i have two Scientific Linux 5.8 computers and a bluetooth 3.0+HS dongle at each PC. The bluetooth devices are paired. I want to transmit data files via bluetooth (more precisely: via HS) but it does not work:
On both PC's I added:
    # sdptool add ftp
    # sdptool add opush
then I tried:
    # nautilus-sendto <data-file>
and choosed the remote device. But I got an error: "gnome-obex-send: the remote device doesn't support object receiving".
Funny: When I shut down the remote device then i get the same error -.-
On top of that, I tried to start an obex server at the remote PC:
    # gnome-obex-server
    ** (gnome-obex-server:18545): WARNING **: OBEX server register error: -1
    ** (gnome-obex-server:18545): WARNING **: Unable to initialize OBEX source
    ** (gnome-obex-server:18545): WARNING **: Couldn't initialise OBEX listener

Does anyone know what to do?

Regards,
Steffen