Newbie: sound server playing left channel only

[Jacky.]

I added a second input and output to my project, linked input directly to the output, and no matter what I do (restart sound server, restart Sonicbirth, load an other file, etc.), I still have "Device: 1 channels 44100 hz" and the sound plays mono (left channel only).

Any ideas? FYI, I already read the corresponding section of SB's manual.
Thanks a lot.

[Jacky.]

Okay, it looks like SB doesn't like my fireface 400. It works with the internal soundcard.