I have this card working on BT5R1 Gnome VM, however it wont inject on ch13? Any ideas?

I have started with airmon-ng wlan0 13, airodump -c 13 etc.

I followed the instructions from: http://www.backtrack-linux.org/wiki/...reless_Drivers to update the drivers, although that may not have been neccessary.

Changing the AP to channel 11 I was able to inject fine.