Strange error message while trying to start wpa_supplicant

[Claude Frantz]

Hello Folk !

I have compiled wpa_supplicant-0.6.10. "uname -a" results in "Linux 
localhost.localdomain 2.6.31.12-174.2.22.fc12.i686.PAE #1 SMP Fri Feb 19 
19:10:04 UTC 2010 i686 i686 i386 GNU/Linux".

When trying to start wpa_supplicant using
"/usr/local/bin/wpa_supplicant -Dwext -iwlan0
-c/etc/wpa_supplicant/wpa_supplicant.conf  -d", the following message 
appears:

Initializing interface 'wlan0' conf 
'/etc/wpa_supplicant/wpa_supplicant.conf' driver 'wext' ctrl_interface 
'N/A' bridge 'N/A'
Configuration file '/etc/wpa_supplicant/wpa_supplicant.conf' -> 
'/etc/wpa_supplicant/wpa_supplicant.conf'
Reading configuration file '/etc/wpa_supplicant/wpa_supplicant.conf'
Line 1: unknown global field 'ctrl_interface=DIR=/var/run/wpa_supplicant 
GROUP=wheel'.
Line 1: Invalid configuration line 
'ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=wheel'.
Priority group 0
    id=0 ssid='.........'
    id=1 ssid='.........'
    id=2 ssid='.........'
    id=3 ssid='.........'
Failed to read or parse configuration 
'/etc/wpa_supplicant/wpa_supplicant.conf'.
Failed to add interface wlan0
Cancelling scan request
Cancelling authentication timeout

What is wrong in this first line ? If I change it to a comment line, no 
problem occurs, but no ctrl_interface is present, of course.

Thanks a lot !

Claude