Current and new users of KWO having a problem with the patcher version KWO v 1.6 are recommended to download the new version KWO v 1.62 with patcher fix and new features.
Link to download below. (requires serial number)
Windows
Mac OSX
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New Features as well as this fix Include:

New controls options

Mouse lock - right mouse block, left mouse attack, L-lock
Attack key (Ctrl) for cycling through strikes,
Mouse sensitivity,
Tab is action key.. will auto pick up items, opens chests, pick apples

Key Binding

Elemental bracers - fire, ice, poison