Choosing the option "Send all keyboard input to plug-in" does not always result in the plug-in receiving the keyboard input. This problem has been around for a while and it would help out us keyboard-shortcutters if it were nailed down. For example, Kontakt 3 does not get the keyboard inputs even with the above option enabled and the "Capture keyboard from host" selected in the Kontakt options Some related threads:

Is this just me? "Send all keyboard input to plug-in" is not working here.

... and again.

... anyone ?