Copy Selection Hotkey doesn't work

I’m tested latest Devonthink Pro with my office’s iMac and that’s still running in OS X 10.6.8

“Copy Selection” Hotkey doesn’t work there.
Nothing happens when I select some text and press the hotkey. (ctrl + cmd + F11)
“Take Note” hotkey is fine.
Have tried changing different hotkey’s but none works (with really odd keys like ], \ etc).

Both works fine with Lion on my Macbook.