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