I usually use the numeric keypad to move around-
5=forward
2=back
1=straif left
3=straif right
and all the keys around it for everything else.

When I try assign 5 to walk forward, the space is left blank, and in game I cant move forward.

Is anyone else affected by this, and is there a work around besides for changing keys.

A search of the forum pulled this up: http://www.gamesas.com/topic/1237065-key-binding-issues/page__p__18757094__hl__number%20pad__fromsearch__1#entry18757094
Have a look might be some help for you there.

Thanks for the link, I'll give that a go