kismet and WG511

Hi,

I have a Netgear WG511 WLAN card with Prism chipset.
The card is runnig fine. Now I'm trying to run Kismet 2004.04.R.
But the execution of the program fails with this error message:

Will drop privs to XXX (XXX) gid XXX
No specific sources given to be enabled, all will be enabled.
Enabling channel hopping.
Enabling channel splitting.
Source 0 (prism54): Enabling monitor mode for prism54g source interface eth1 channel 6...
Source 0 (prism54): Opening prism54g source interface eth1...
Spawned channelc control process 29444
Dropped privs to paul (1000) gid 1000
Allowing clients to fetch WEP keys.
Logging networks to Kismet-Jul-21-2004-1.network
Logging networks in CSV format to Kismet-Jul-21-2004-1.csv
Logging networks in XML format to Kismet-Jul-21-2004-1.xml
Logging cryptographically weak packets to Kismet-Jul-21-2004-1.weak
Logging cisco product information to Kismet-Jul-21-2004-1.cisco
Logging gps coordinates to Kismet-Jul-21-2004-1.gps
Logging data to Kismet-Jul-21-2004-1.dump
Writing data files to disk every 300 seconds.
Mangling encrypted and fuzzy data packets.
Tracking probe responses and associating probe networks.
Reading AP manufacturer data and defaults from /usr/etc/ap_manuf
Reading client manufacturer data and defaults from /usr/etc/client_manuf
FATAL: Dump file error: Unable to open wtap dump file: Kismet-Jul-21-2004-1.dump (Permission denied)
Sending termination request to channel control child 29444...
Waiting for channel control child 29444 to exit...
WARNING: Error disabling monitor mode: Failed to set channel 0 22:Invalid argument
WARNING: prism54 (eth1) left in an unknown state. You may need to manually
restart or reconfigure it for normal operation.
WARNING: Sometimes cards don't always come out of monitor mode
cleanly. If your card is not fully working, you may need to
restart or reconfigure it for normal operation.
Kismet exiting.

My kismet.conf reads:

version=2004.03.devel.a
servername=Kismet
suiduser=XXX (replaced)
source=prism54g,eth1,prism54
channelhop=true
channelvelocity=5
channelsplit=true
defaultchannels=IEEE80211b:1,6,11,2,7,3,8,4,9,5,10
defaultchannels=IEEE80211g:1,6,11,2,7,3,8,4,9,5,10
defaultchannels=IEEE80211a:36,40,44,48,52,56,60,64
defaultchannels=IEEE80211ab:1,6,11,2,7,3,8,4,9,5,1 0,36,40,44,48,52,56,60,64
tcpport=2501
allowedhosts=127.0.0.1
maxclients=5
gps=true
gpshost=localhost:2947
gpsmodelock=false
alert=NETSTUMBLER,5/min,2
alert=WELLENREITER,5/min,2
alert=LUCENTTEST,5/min,2
alert=DEAUTHFLOOD,5/min,4
alert=BCASTDISCON,5/min,4
alert=CHANCHANGE,5/min,4
alert=AIRJACKSSID,5/min,2
alert=PROBENOJOIN,5/min,2
alert=DISASSOCTRAFFIC,5/min,
allowkeytransmit=true
writeinterval=300
sound=false
soundplay=/usr/bin/play
sound_new=/usr/share/kismet/wav/new_network.wav
sound_traffic=/usr/share/kismet/wav/traffic.wav
sound_junktraffic=/usr/share/kismet/wav/junk_traffic.wav
sound_alert=/usr/share/kismet/wav/alert.wav
speech=false
festival=/usr/bin/festival
speech_typspeech_encrypted=New network detected, s.s.i.d. %s, channel %c, network encrypted.
speech_unencrypted=New network detected, s.s.i.d. %s, channel %c, network open.
ap_manuf=ap_manuf
client_manuf=client_manuf
metric=false
waypoints=false
waypointdata=%h/.gpsdrive/way_kismet.txt
alertbacklog=50
logtypes=dump,network,csv,xml,weak,cisco,gps
trackprobenets=true
noiselog=false
corruptlog=true
beaconlog=true
phylog=true
mangledatalog=true
fuzzycrypt=wtapfile,wlanng,wlanng_legacy,wlanng_av s,hostap,wlanng_wext
dumptype=wiretap
dumplimit=0
logdefault=Kismet
logtemplate=%n-%d-%i.%l
piddir=/var/run/
configdir=%h/.kismet/
ssidmap=ssid_map
groupmap=group_map
ipmap=ip_map

Any hints how to solve this problem?
Thank you
Christian