First of all thanks a lot for this tool..It was working till yesterday.. now today is a different story. I had been installing OpenCL on Backtrack and configuring it (ATI Radeon Card). Also installing pyrit which is not fully functional yet. Not sure if that broke Fern.

Basically when I press for Scan for Access Points button I am now getting following message.

"Fern failed to start scan due to an airodump-ng error: ioctl(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."

Please note the versions as below:

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 64 Bit Gnome.
Linux bt 3.2.6 #1 SMP Fri Feb 17 10:34:20 EST 2012 x86_64 GNU/Linux.

Thanks once again for this tool..