I have started to use Flash Pro CS6, but my keyboard shortcuts such as F6 to insert a new Keyframe didn't work..I soon found that you could create your own Keyboard Shortcut list within the Flash application, and I am trying to enter F6 for a new Keyframe, but it only lets me enter one letter/number at a time and deletes the other one. I have made sure that F6 isn't in use. It now isn't, any help would be appreciated.
if no shortcut works, try resetting your flash pro preferences:
Hold down Shift+Ctrl+Alt (Win) or Shift+Command+Option (Mac) when starting flash pro.
for more info: