I've just run Backtrack 5 Revision 1 on a live DVD and i wanted to fire up NMAP but i get an error. It says:

Starting Nmap 5.59BETA1 ( http://nmap.org ) at 2011-08-19 17:32 EDT
route_dst_netlink: can't find interface "wlan0"

I've read it was a problem with NMAP 5.59BETA1, any help on how to fix this? Thanks!