I'm having issues with Vox 6.51 and P3D V2.5 with the first hotfix applied - it seems that the FO option doesn't work properly. I'm wondering if anyone else has run into this, and whether it's an issue with Vox, or possibly some kind of FSUIPC issue. The problem is, it seems the FO cannot interact with the aircraft, change radios etc. And when 'he' goes to make a radio call, it gets stuck on 'First Officer is operating radio', causing all other radio traffic to go a bit funny as well.