I'm having a problem where the actionmapper doesn't seem to write its changes to my profile's actionmaps, so I'm stuck with the a configuration that I can't really access. If you've heard about people claiming they're throwing grenades with the right mouse button, then you've heard about it. Anyone know how to fix this?
make sure you create a new set of actionmaps, from the File menu
also once you're created one and modified it, you will need to set it as "active". To do this first select it on the list with left click, then right click the selected and choose "Set Active" from the right click menu. Also you can't change keys while Crysis is still open, they won't take effect till next time you start Crysis up.