Pb firefox

ASSERT: *** Search: _installLocation: engine has no file!
Stack Trace: 
0:ENSURE_WARN(false,_installLocation: engine has no file!,2147500037)
1:()
2:()
3:()
4:epsGetAttr([object Object],alias)
5:()
6:SRCH_SVC_getEngineByAlias(http://www.google.fr)
7:getEngineByAlias(http://www.google.fr)
8:getShortcutOrURI(http://www.google.fr,[object Object])
9:canonizeUrl([object KeyboardEvent],[object Object])
10:handleURLBarCommand([object KeyboardEvent])
11:anonymous(textentered,[object KeyboardEvent])
12:fireEvent(textentered,[object KeyboardEvent])
13:onTextEntered()
14:handleEnter(false)
15:onKeyPress([object KeyboardEvent])
16:onxblkeypress([object KeyboardEvent])

Configuration: Système d'exploitation
<br />	Windows XP Media Center (build 2600) Service Pack 2
<br />Navigateur web par défaut: Mozilla Firefox
<br />Client e-mail par défaut: Mozilla Thunderbird
<br />Antivirus: Avira AntiVir PersonalEdition 8.0.1.27
<br />Pare-feu:ZoneAlarm Firewall 7.0.483.000
<br />Carte mère
<br />	SMBios version 2.4
<br />ASUSTek Computer INC. Basswood 1.05
<br />Bios: Phoenix Technologies, LTD 3.11 11/01/2006 taille: 1024Kb
<br />Processeur
<br />	Intel(R) Core(TM)2 CPU 6300 @ 1.86GHz (1866Mhz) (L1: 64ko L2: 2048ko
<br />)
<br />Chipset
<br />	Northbridge: Intel 82P965/G965
<br />Southbridge: Intel 82801HH (ICH8DH)
<br />Mémoire
<br />	Barette de 512 Mo 667 Mhz None
<br />Barette de 512 Mo 667 Mhz None
<br />Barette de 512 Mo 667 Mhz None
<br />Barette de 512 Mo 667 Mhz None
<br />mémoire windows (cette valeur ne correspond pas exactement à la
<br />mémoire totale physique): 2046Mo
<br />Carte Graphique
<br />	nVidia Corporation G72 [GeForce 7500 LE] (512 Mo)
<br />Péripheriques IDE
<br />	SAMSUNG SP2504C VT100-49 (SATA II, 232.89 Go, tampon: 8 Mo)
<br />Lecteurs CD/DVD
<br />	TSSTcorpCD/DVDW TS-H653L0414 (DVD-R/DL sequential recording Recorder)
<br />MD2114O NXF361V 2.0B
<br />Disque dur
<br />	SAMSUNG SP2504C (232.88Go)
<br />Generic USB CF Reader USB Device
<br />Generic USB MS Reader USB Device
<br />Generic USB SD Reader USB Device
<br />Generic USB SM Reader USB Device
<br />Cartes PCI/AGP
<br />	Stockage
<br />Intel Corporation:82801 SATA RAID Controller
<br />
<br />Réseau
<br />Intel Corporation:82562V 10/100 Network Connection
<br />Atheros Communications Inc.:AR5413 802.11abg NIC
<br />
<br />Affichage
<br />nVidia Corporation:G72 [GeForce 7500 LE]
<br />
<br />Multimedia
<br />Intel Corporation:82801H (ICH8 Family) HD Audio Controller
<br />Philips Semiconductors:SAA7133/SAA7135 Video Broadcast Decoder
<br />
<br />Ponts
<br />Intel Corporation:82P965/G965 Memory Controller Hub
<br />Intel Corporation:82P965/G965 PCI Express Root Port: 82P965/G965 PCI Express
<br />Root Port
<br />Intel Corporation:82801H (ICH8 Family) PCI Express Port 1: 82801H (ICH8 Family)
<br />PCI Express Port 1
<br />Intel Corporation:82801 PCI Bridge: 82801 PCI Bridge
<br />Intel Corporation:82801HH (ICH8DH) LPC Interface Controller
<br />
<br />Bus Series
<br />Intel Corporation:82801H (ICH8 Family) USB UHCI Controller #4
<br />Intel Corporation:82801H (ICH8 Family) USB UHCI Controller #5
<br />Intel Corporation:82801H (ICH8 Family) USB2 EHCI Controller #2
<br />Intel Corporation:82801H (ICH8 Family) USB UHCI Controller #1
<br />Intel Corporation:82801H (ICH8 Family) USB UHCI Controller #2
<br />Intel Corporation:82801H (ICH8 Family) USB UHCI Controller #3
<br />Intel Corporation:82801H (ICH8 Family) USB2 EHCI Controller #1
<br />Intel Corporation:82801H (ICH8 Family) SMBus Controller
<br />Agere Systems:FW323
<br />
<br />
<br />