Problem with calibration

Hello,
I am running Cross 1.5.5, 1.6.0 and the latest version 1.7.1 on my machine with huge problems at calibration.
I can hear the timecode while in Line In mode in my mixer, so everything is routed correctly. But if I click on "Calibration..." the buttons stay orange and active, but nothing really happens. No error message pops up, it stays active and does not return to inactive (grey).
I have been testing around with Blackbrook, but he could not figure out the error. We are not quite sure if it is a general software issue.
Can you please help me? thank you very much!
Cheers,
Jannik
I am running Cross 1.5.5, 1.6.0 and the latest version 1.7.1 on my machine with huge problems at calibration.
I can hear the timecode while in Line In mode in my mixer, so everything is routed correctly. But if I click on "Calibration..." the buttons stay orange and active, but nothing really happens. No error message pops up, it stays active and does not return to inactive (grey).
I have been testing around with Blackbrook, but he could not figure out the error. We are not quite sure if it is a general software issue.
Can you please help me? thank you very much!
Cheers,
Jannik