hotekey manager broken

Hi guys,
the keys for next/last aren't working and when I fire up the hotkey manager it says:
...ckmagic Design\Fusion\Scripts\Utility\Hotkey Manager.lua:20: attempt to call method 'GetHotkeys' (a nil value)
Any ideas? thank you.
the keys for next/last aren't working and when I fire up the hotkey manager it says:
...ckmagic Design\Fusion\Scripts\Utility\Hotkey Manager.lua:20: attempt to call method 'GetHotkeys' (a nil value)
Any ideas? thank you.