FFADO error with Audiofire 12

ludovic@ubuntu:~$ ffado-mixer
QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed: Aucun fichier ou dossier de ce type
QFileSystemWatcher: failed to add paths: /home/ludovic/.config/ibus/bus
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FFADO Control DBUS service
Part of the FFADO project -- www.ffado.org
Version: 2.999.0-
(C) 2008, Pieter Palmers
This program comes with ABSOLUTELY NO WARRANTY.
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 Discovering devices...
06037015510: Warning (ieee1394service.cpp)[ 375] initialize: Could not set SPLIT_TIMEOUT to min requested (1000000)
06037015536: Warning (ieee1394service.cpp)[ 379] initialize: Set SPLIT_TIMEOUT to min requested (1000000) did not succeed
06037158951: Warning (fireworks_session_block.cpp)[ 257] loadFromMemory: size not correct: got 13392, should be -4 according to data
DBUS service running
press ctrl-c to stop it & exit