Calibration problem with Cross 2.x

Hello,
I've got the Cross Pack (2 SL1210, U46MK2, ASUSN73S [Intel Core i7 - 2630QM + 4 GB RAM]) that I'm used to calibrate before every use. Unfortunately, since the first Cross 2 version, there is a shrill noise at soon as the timecode begin to be played.
However, when I go back to a older version (1.6 i.e.) and I restart the calibration, everything is working perfectly. Furthermore, if I close Cross 1.6 and go back to Cross 2.x (2.3.1. for the moment), shrill noise has disappeared and everything seems to work fine until the next time I close/restart Cross software.
Do you have any idea where it could come from?
Thanks in advance for your response
I've got the Cross Pack (2 SL1210, U46MK2, ASUSN73S [Intel Core i7 - 2630QM + 4 GB RAM]) that I'm used to calibrate before every use. Unfortunately, since the first Cross 2 version, there is a shrill noise at soon as the timecode begin to be played.
However, when I go back to a older version (1.6 i.e.) and I restart the calibration, everything is working perfectly. Furthermore, if I close Cross 1.6 and go back to Cross 2.x (2.3.1. for the moment), shrill noise has disappeared and everything seems to work fine until the next time I close/restart Cross software.
Do you have any idea where it could come from?
Thanks in advance for your response