wlan0 no such device backtrack

Ettercap error - BackTrack Linux.

How to Start Networking in Backtrack - Page 7 - BackTrack Linux.
In BT4 my wlan0 was working fine and now it says no such device. I killed the dhclient though but can't manage to get the wlan0 working.
To start networking in Backtrack 4 final issue the following command.. replace < interface> with the name of your interface, e.g wlan0 .. SIOCSIFADDR: No such device eth1: ERROR while getting interface flags: No such.
wlan0 Link encap:Ethernet HWaddr 94:44:52:df:b8:47. usb0: ERROR while getting interface flags: No such device. The adapter is listed and.
On typing airodump-ng wlan0 I get 'ARP Linktype set to 1, expected ARP< numbers>'.. I also tried airodump-ng mon0 - no such device.

wlan0 no such device backtrack

Thread: ALFA AWUS036NH RT3070 with aircrack-ng help - BackTrack Linux.
Hello i was trying to follow this tutorial http://lifehacker.com/5873407/how-to-crack -a-wi+fi-networks-wpa-password-with-reaver I tought it would.
On typing airodump-ng wlan0 I get 'ARP Linktype set to 1, expected ARP< numbers>'.. I also tried airodump-ng mon0 - no such device.

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Thread: No result "airodump-ng wlan0" - BackTrack Linux.

I have now finally been able to boot into backtrack 4 after running into some. wlan0: ERROR while getting interface flags: No such device.
My alfa works with Windows, but it is not recognized in Backtrack 3: I tried. wlan0: ERROR while getting interface flags: No such device found.

My alfa works with Windows, but it is not recognized in Backtrack 3: I tried. wlan0: ERROR while getting interface flags: No such device found.

Thread: Wireless with Asus K55VM - BackTrack Linux.