Fern failed to start scan due to an airodump-ng error about fern-wifi-cracker HOT 9 OPEN

please what version of aircrack do you use?.

aircrack 1.0 rc1, Fern Wifi Cracker 1.5 on OS Debian 6.0.3 (squeeze)

Please could you upgrade to a higher version of aircrack..If it still behaves 
the same way, ill search deeper into the problem.

Thanks Dude. Hope to hear from you soon.

Fern failed to start scan due to an airodump-ng error: �[0mioctl(SIOCSIWMODE) 
failed: Device or resource busy ARP linktype is set to 1 (Ethernet) - expected 
ARPHRD_IEEE80211, ARPHRD_IEEE80211_FULL or ARPHRD_IEEE80211_PRISM instead. Make 
sure RFMON is enabled: run 'airmon-ng start wlan0 ' Sysfs injection support was 
not found either.

Python Version: 2.6.5 r265:79
Aircrack Version: Aircrack-ng 1.1 r2076
Qt Version: 4.7.3

I am running BackTrack 5 R2
Linux bt 3.2.6 #1 SMP Fri Feb 17 10:34:20 EST 2012 x86_64 GNU/Linux

Fern failed to start scan due to an airodump-ng error: �[0mioctl(SIOCSIWMODE) 
failed: Device or resource busy ARP linktype is set to 1 (Ethernet) - expected 
ARPHRD_IEEE80211, ARPHRD_IEEE80211_FULL or ARPHRD_IEEE80211_PRISM instead. Make 
sure RFMON is enabled: run 'airmon-ng start wlan0 ' Sysfs injection support was 
not found either.

ubuntu 11.10
aircrack-ng version: 1:1.1-1.1build1
fern version: 1.2 update 1.5.   

Try this link:

http://www.backtrack-linux.org/forums/backtrack-howtos/31403-howto-rtl8187-backt
rack-r1-monitor-mode-unknown-error-132-a.html 

Try this link:

http://www.backtrack-linux.org/forums/backtrack-howtos/31403-howto-rtl8187-backt
rack-r1-monitor-mode-unknown-error-132-a.html 

Sorry to answer, but I changed of OS.

Now I'm using Debian Wheezy ant FernWiFi it's working well.

Regards

Alright.. Thats cool :)