Do
cat /etc/bluetooth/rfcomm.conf
and post the output.
My one looks something like this:
rfcomm0 {
# Automatically bind the device at startup
bind yes;
# Bluetooth address of the device
device xx:xx:xx:xx:xx:xx;
# RFCOMM channel for the connection
channel 1;
# Description of the connection
comment "Arduino";
}
again where "xx:xx:xx:xx:xx:xx" would be the address for your particular bluetooth shield.