Motu Pci 424 And Alerts Options

[grumph]

Does the alert sounds works in OsX with a pci424?
On my Mac,it works untill i open Audiodesk for the very first time and set the hardware set-up from built-in to core audio and then assign my audio bundles.
After this,the alerts works only from internal speaker.I've tried all possibilities in sound prefs and audio-midi set-up.No change.
I've trashed alll prefs related to audio-midi-pci 424 and restart.
The alerts works again.
Open audiodesk,hardware is returned to built-in,change it to core audio and assign audio bundles.
Alerts are back through internal speaker!
Another strange thing:i've put pci console in the dock and when i click on it,a second icon of pci console appear in the dock.So,when my pci console is open,i have 2 pci console icons into the dock!!
Any idea?
Thanks.