[LAU] Claudia and Ardour3

Hello all, I am giving Ardour 3 a try. This is a wonderful piece of software. I just note the following problem: I create a studio under Claudia, add Ardour as an app, and then just try to record midi data from my keyboard on a midi track named 'Synth'. The clip does appear and I can see the notes getting drawed on the track, but in the end I get the following message: [ERROR]: cannot open MIDI file /home/user/ladish-projects/Ardour3_7174/interchange/Ardour3_7174/midifiles/Synth-1.mid for write and the clip disappears. The midifile directory does exist but the correct path is: /home/user/ladish-projects/Ardour3_7174/interchange/Ardour3/midifiles/ I don't know is the directory is created by Ardour, or Claudia or Ladish. But it may also be that I am doing something wrong. I tried to redefine the file locations in the Session>Properties but this did not solve the problem. Any idea? Thanks in advance, Yvonnick