Note that your IVC.ini file is reset with this update due to the IVC server and client updates embedded in the program. Make sure you have the correct settings. To make it easy, I put a IVC.ini file in the 'cadet file browser' in TS. Use this and you're sorted.
If you can't: make sure you have "outsiders = all" line just like that without the "#" in front of it. This function de-activates the distance realism factor in IVC. This means you will hear everybody cristal clear regardless of terrain playing havoc on your signal.
I personally like to have the "quick = 1" command in there as well (also without the '#' sign to activate it). This function makes you able to distinguish between VHF and UHF calls due to a 'mike click' being added in the UHF comms.