Bluetooth connection error

Hello,

First, thank you for your work, it is exactly what I was looking for.
I’m using ubuntu 14.04 and I can control my NXT using monobrick through USB.
To use a bluetooth connection, I tried to replace this line

var brick = new Brick<Sensor,Sensor,Sensor,Sensor>(“usb”);

with

var brick = new Brick<Sensor,Sensor,Sensor,Sensor>(“/dev/rfcomm1″);

I have configured the connection (using the default pwd “1234″) and I can see my computer in my nxt.

When I run my program, I receive this error :

Error: Failed to open connection
Press any key to end…

Unhandled Exception:
System.IO.IOException: Mauvais descripteur de fichier
at System.IO.Ports.SerialPortStream.ThrowIOException () [0x00000] in <filename unknown>:0
at System.IO.Ports.SerialPortStream.Dispose (Boolean disposing) [0x00000] in <filename unknown>:0
at System.IO.Ports.SerialPortStream.Finalize () [0x00000] in <filename unknown>:0

Do you know what I’m doing wrong?

Thank you for your answer,

Joël