Suddenly today I cannot use Voice Commands to make a call. The app opens very briefly then closes with the error message "Unfortunately Voice Commands has stopped working". If I try again, the app won't even open nor does the error message appear. Then, if I reboot, the same cycle happens again. I've been on the OTA version of JB for several weeks and this is the first time this has happened. Anybody have any experience in this or a solution? Thanks.