We are running Unity 5.0(1) with Voice Recognition enabled and working fine for the most part. We had one issue where it would not understand the word commands like "Play new message" but would understand "one". That is a known bug. (suprise,suprise) and is resolved through adding a reg entry.
At this point the spoken commands are working with the exception of one. The "help" opption from the main menu is not recognizes but the "0" is.
Anyone have any ideas. Thanks