After upgrading to OSX 10.10.3 (MBPro/15"/2.2GHZ i7/8GB), the following problems started occurring and I have not been able to fix them, so any corrective action advice will be very welcome: 1. Mail -- new mail and other mail-related sounds have disappeared (have quit/relaunched Mail and have also rebooted multiple times, to no avail). 2. BusyCal -- pop-up alarm windows have stopped working (have reset prefs, have re-installed the app, have quit/relaunched multiple times, and have rebooted multiple times, all to no avail). Thanks in advance for any help.