[PD] OS X Jack

[fredv]

finally I succeded in lauching PD with jack Tools, but they can not 
communicate.
PD audio IO permits to select jack driver, with following error :
can somebody help me ?
thank you.

RCNE SendEventToEventTarget (tblt 2                   ) failed, -9874


"audio I/O error history:
seconds ago     error type
     22.98       unknown


Could not create format converter: error = 0x666D743F = 'fmt?'
PaOSX_OpenCommonDevice: PAOSX_DevicePropertyListener failed.
: error = 0x666D743F = 'fmt?'
Error number -10000 occured opening portaudio stream
Error message: Host error.

RCNE SendEventToEventTarget (tblt 2                   ) failed, -9874


pd: exiting
closing audio...
closing MIDI...
... done."