possible Voiceover bug when announcing the date and time

hi there
can anyone help?
i'm trying to get Voiceover on the Mac to announce the time and date using the same voice as voiceover.
I am using the non compact Karen voice and have gone into the clock pannal of the date and time section, where I have selected the announce time check box.
I download Karen, have tried both the compact and non compact versions. however when hitting the keystroke to announce said time, in this case Option D its still using the default compact Daniel voice.
I have made sure the Karen voice is selected and that it is saved.
however its not sticking. also another I noticed was that usually I could hit control to stop the announcement. however after doing a complete reformat using the Internet reformat option I can no longer do this.
if anyone is able to help in solving this i'd be greatly appreciated.