Safari ne fonctionne plus

bonjour, mon safari ne veux plus fonctionné sur mon macbook, quand je l'ouvre il m'indique tout suite un message d'erreur. j'ai essayé de résoudre le problème en regardant sur internet mais ça n'a pas fonctionné. Merci !! voici le message :
Process: Safari [1124]
Path: /Applications/Safari.app/Contents/MacOS/Safari
Identifier: com.apple.Safari
Version: ???
Build Info: WebBrowser-7537086007008000~1
Code Type: X86-64 (Native)
Parent Process: launchd [141]
Responsible: Safari [1124]
User ID: 501

Date/Time: 2016-11-12 10:51:24.973 -0500
OS Version: Mac OS X 10.9.5 (13F1911)
Report Version: 11
Anonymous UUID: 66DC6CA7-8C87-9CAD-86CD-B5F6E535EC81


Crashed Thread: 0

Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000

Application Specific Information:
dyld: launch, loading dependent libraries, ignoring DYLD_* env vars

Dyld Error Message:
Library not loaded: /usr/lib/libextension.dylib
Referenced from: /System/Library/StagedFrameworks/Safari/Safari.framework/Versions/A/Safari
Reason: image not found

Binary Images:
0x7fff647de000 - 0x7fff64811887 dyld (239.5) <1D3130FE-FE7E-3C4C-8E74-EB51895B6BA5> /usr/lib/dyld
0x7fff844d5000 - 0x7fff84dfe5ab com.apple.CoreGraphics (1.600.0 - 599.35.15) <ED5E3C37-7E2F-3885-8091-DFC9B44B38E8> /System/Library/Frameworks/CoreGraphics.framework/Versions/A/CoreGraphics
0x7fff8546a000 - 0x7fff8546afff com.apple.Accelerate (1.9 - Accelerate 1.9) <509BB27A-AE62-366D-86D8-0B06D217CF56> /System/Library/Frameworks/Accelerate.framework/Versions/A/Accelerate
0x7fff85503000 - 0x7fff85503fff com.apple.Cocoa (6.8 - 20) <E90E99D7-A425-3301-A025-D9E0CD11918E> /System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa
0x7fff858cb000 - 0x7fff858e9ff7 com.apple.Accounts (113 - 113) <FEB37642-C973-3CD2-B279-142492266A16> /System/Library/Frameworks/Accounts.framework/Versions/A/Accounts
0x7fff858ea000 - 0x7fff8592bfff com.apple.PerformanceAnalysis (1.47 - 47) <95435F84-C251-3C48-B6CD-9EE7A63D6E26> /System/Library/PrivateFrameworks/PerformanceAnalysis.framework/Versions/A/PerformanceAnalysis
0x7fff85939000 - 0x7fff85943ff7 com.apple.CrashReporterSupport (10.9 - 539) <B25A09EC-A021-32EC-86F8-05B4837E0EDE> /System/Library/PrivateFrameworks/CrashReporterSupport.framework/Versions/A/CrashReporterSupport
0x7fff860c1000 - 0x7fff860c2ff7 libDiagnosticMessagesClient.dylib (100) <4CDB0F7B-C0AF-3424-BC39-495696F0DB1E> /usr/lib/libDiagnosticMessagesClient.dylib
0x7fff86198000 - 0x7fff861acfff com.apple.aps.framework (4.0 - 4.0) <2D42DCDD-055E-3EE1-97F8-FC447B495D3E> /System/Library/PrivateFrameworks/ApplePushService.framework/Versions/A/ApplePushService
0x7fff864d4000 - 0x7fff864d5ff7 libSystem.B.dylib (1197.1.1) <72A98ACC-7606-3AD5-82AF-02D4EBBD4F02> /usr/lib/libSystem.B.dylib
0x7fff864e4000 - 0x7fff8705aff7 com.apple.AppKit (6.9 - 1265.21) <9DC13B27-841D-3839-93B2-3EDE66157BDE> /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
0x7fff87191000 - 0x7fff87204fff com.apple.securityfoundation (6.0 - 55122.3) <0AFCF575-97C3-3458-A72E-39DA07804EB9> /System/Library/Frameworks/SecurityFoundation.framework/Versions/A/SecurityFoundation
0x7fff87dcc000 - 0x7fff87dddff7 libz.1.dylib (53) <42E0C8C6-CA38-3CA4-8619-D24ED5DD492E> /usr/lib/libz.1.dylib
0x7fff87df8000 - 0x7fff87e5bffb com.apple.SystemConfiguration (1.13.1 - 1.13.1) <339A2A90-DA25-33AF-88E5-2FB38A758FEE> /System/Library/Frameworks/SystemConfiguration.framework/Versions/A/SystemConfiguration
0x7fff87e73000 - 0x7fff8800fff3 com.apple.QuartzCore (1.8 - 332.4) <CFB972D1-FA37-380C-9A47-2A67A84B7442> /System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore
0x7fff880e6000 - 0x7fff8829effb libicucore.A.dylib (511.36) <9AAC5980-2C1F-3B86-8A16-DB533F5E7C84> /usr/lib/libicucore.A.dylib
0x7fff8846a000 - 0x7fff8864ffff com.apple.CoreFoundation (6.9 - 855.17) <729BD6DA-1F63-3E72-A148-26F21EBF52BB> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
0x7fff88b69000 - 0x7fff88b9aff7 libtidy.A.dylib (15.12) <BF757E3C-733A-3B6B-809A-A3949D46466E> /usr/lib/libtidy.A.dylib
0x7fff88bed000 - 0x7fff88bf2fff com.apple.DiskArbitration (2.6 - 2.6) <A4165553-770E-3D27-B217-01FC1F852B87> /System/Library/Frameworks/DiskArbitration.framework/Versions/A/DiskArbitration
0x7fff89326000 - 0x7fff89326fff com.apple.ApplicationServices (48 - 48) <3E3F01A8-314D-378F-835E-9CC4F8820031> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices
0x7fff8934d000 - 0x7fff8934dfff com.apple.CoreServices (59 - 59) <7A697B5E-F179-30DF-93F2-8B503CEEEFD5> /System/Library/Frameworks/CoreServices.framework/Versions/A/CoreServices
0x7fff89bc8000 - 0x7fff89d75f27 libobjc.A.dylib (551.1) <AD7FD984-271E-30F4-A361-6B20319EC73B> /usr/lib/libobjc.A.dylib
0x7fff8a04b000 - 0x7fff8a1e6ff8 com.apple.CFNetwork (673.6 - 673.6) <CAA196FE-BF5A-384F-975E-E0F81359805B> /System/Library/Frameworks/CFNetwork.framework/Versions/A/CFNetwork
0x7fff8a521000 - 0x7fff8a546ff7 com.apple.CoreVideo (1.8 - 117.2) <4674339E-26D0-35FA-9958-422832B39B12> /System/Library/Frameworks/CoreVideo.framework/Versions/A/CoreVideo
0x7fff8ad66000 - 0x7fff8ad66fff com.apple.Carbon (154 - 157) <EFC1A1C0-CB07-395A-B038-CFA2E71D3E69> /System/Library/Frameworks/Carbon.framework/Versions/A/Carbon
0x7fff8ae3b000 - 0x7fff8ae69ff7 com.apple.securityinterface (9.0 - 55047) <0346D8A9-2CAA-38F3-A741-5FBA5E9F1E7C> /System/Library/Frameworks/SecurityInterface.framework/Versions/A/SecurityInterface
0x7fff8b591000 - 0x7fff8b59eff7 libxar.1.dylib (202) <5572AA71-E98D-3FE1-9402-BB4A84E0E71E> /usr/lib/libxar.1.dylib
0x7fff8b78b000 - 0x7fff8b875fff libsqlite3.dylib (158) <00269BF9-43BE-39E0-9C85-24585B9923C8> /usr/lib/libsqlite3.dylib
0x7fff8bda8000 - 0x7fff8c018ffd com.apple.security (7.0 - 55471.14.40) <58F50B4A-FC1E-3AE0-A5DB-DD737E50AC17> /System/Library/Frameworks/Security.framework/Versions/A/Security
0x7fff8c1a4000 - 0x7fff8c1f6fff libc++.1.dylib (120) <4F68DFC5-2077-39A8-A449-CAC5FDEE7BDE> /usr/lib/libc++.1.dylib
0x7fff8c29d000 - 0x7fff8c2baff7 com.apple.framework.Apple80211 (9.4 - 940.60) <043C7CFD-B57B-3F9D-B0FE-CA4B97C43968> /System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Apple80211
0x7fff8c3d9000 - 0x7fff8c3e7fff com.apple.opengl (9.6.5 - 9.6.5) <4FAEADD8-EEB3-3FD9-ADC6-BA65806228CC> /System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL
0x7fff8c5da000 - 0x7fff8c8daff7 com.apple.Foundation (6.9 - 1056.17) <E0B0FAF6-5CA8-3EEB-8BF2-104C0AEEF925> /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
0x7fff8ce6f000 - 0x7fff8cedbfff com.apple.framework.IOKit (2.0.1 - 907.100.14) <10932113-9F7E-38A0-A158-A019A555CAC3> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
0x7fff8e1ac000 - 0x7fff8e26effd com.apple.CoreText (367.23 - 367.23) <C799261E-2E19-3D69-8A8D-098B7DD8D31D> /System/Library/Frameworks/CoreText.framework/Versions/A/CoreText
0x7fff8e2f6000 - 0x7fff8e354ff7 com.apple.corelocation (1486.17 - 1486.24.1) <69C6AD7D-BA34-3F40-B73F-D66DB9C2BBE9> /System/Library/Frameworks/CoreLocation.framework/Versions/A/CoreLocation
0x7fff90996000 - 0x7fff90a9dff7 com.apple.ImageIO.framework (3.3.0 - 1052) <6BFA69B9-A607-39BC-B302-E2E92E5BC7F3> /System/Library/Frameworks/ImageIO.framework/Versions/A/ImageIO
0x7fff90e8d000 - 0x7fff90e8efff libquit.dylib (161.2) <B7BD1F27-FA26-38CB-B018-FA2E14F7D26B> /usr/lib/libquit.dylib

Model: MacBookPro5,4, BootROM MBP53.00AC.B03, 2 processors, Intel Core 2 Duo, 2.53 GHz, 4 GB, SMC 1.49f2
Graphics: NVIDIA GeForce 9400M, NVIDIA GeForce 9400M, PCI, 256 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1067 MHz, 0x80AD, 0x484D54313235533642465238432D47372020
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1067 MHz, 0x80AD, 0x484D54313235533642465238432D47372020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8D), Broadcom BCM43xx 1.0 (5.106.98.100.22)
Bluetooth: Version 5.2.7f4 15858, 3 services, 23 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: ST9250315ASG, 250,06 GB
Serial ATA Device: MATSHITADVD-R UJ-868
USB Device: Built-in iSight
USB Device: Internal Memory Card Reader
USB Device: Apple Internal Keyboard / Trackpad
USB Device: IR Receiver
USB Device: BRCM2046 Hub
USB Device: Bluetooth USB Host Controller
Thunderbolt Bus: