Thanks Davis for your reply! I did what you said, here is the text:
------------
5/21/16 3:11:33.952 AM iconservicesagent[595]: -[ISGenerateImageOp generateImageWithCompletion:] Failed to composit image for descriptor <ISBindingImageDescriptor: 0x7f9ffb71d5c0>.
5/21/16 3:11:33.952 AM quicklookd[2279]: Error returned from iconservicesagent: (null)
5/21/16 3:11:36.608 AM pkd[586]: enabling pid=2334 for plug-in com.apple.share.AirDrop.send(1.0) EC8C8EB7-462E-4F9D-BA67-238B1F561670 /System/Library/PrivateFrameworks/FinderKit.framework/Versions/A/PlugIns/AirDro p.appex
5/21/16 3:11:36.631 AM secinitd[305]: No AppSandbox cache present.
5/21/16 3:11:36.697 AM AirDrop[2336]: plug-in sdk "com.apple.share-services" not registered
5/21/16 3:11:36.697 AM AirDrop[2336]: plug-in sdk "com.apple.share-services" not registered
5/21/16 3:11:36.697 AM diagnosticd[129]: error evaluating process info - pid: 2336, puniqueid: 2336
5/21/16 3:11:36.698 AM com.apple.xpc.launchd[1]: (com.apple.share.AirDrop.send[2336]) Service exited due to signal: Illegal instruction: 4
5/21/16 3:11:36.698 AM Finder[2334]: plugin com.apple.share.AirDrop.send interrupted
5/21/16 3:11:36.698 AM Finder[2334]: Hub connection error Error Domain=NSCocoaErrorDomain Code=4097 "connection to service named com.apple.share.AirDrop.send" UserInfo={NSDebugDescription=connection to service named com.apple.share.AirDrop.send}
5/21/16 3:11:36.698 AM Finder[2334]: --error: [ShareKit] error in -[NSExtension beginExtensionRequestWithInputItems:completion: Error Domain=NSCocoaErrorDomain Code=4097 "connection to service named com.apple.share.AirDrop.send" UserInfo={NSDebugDescription=connection to service named com.apple.share.AirDrop.send}
5/21/16 3:11:36.711 AM com.apple.xpc.launchd[1]: (com.apple.ReportCrash[2337]) Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.ReportCrash
5/21/16 3:11:36.718 AM ReportCrash[2337]: Unable to find containing app bundle for /System/Library/PrivateFrameworks/FinderKit.framework/Versions/A/PlugIns/AirDro p.appex/Contents/MacOS/AirDrop. Will not read AppStore receipt
5/21/16 3:11:36.000 AM kernel[0]: Sandbox: coresymbolicatio(2338) System Policy: deny(1) file-write-create /System/Library/Caches/com.apple.coresymbolicationd
5/21/16 3:11:36.745 AM coresymbolicationd[2338]: /System/Library/Caches/com.apple.coresymbolicationd/data does not exist, resetting cache
5/21/16 3:11:36.745 AM coresymbolicationd[2338]: Attempt to create [/System/Library/Caches/com.apple.coresymbolicationd/data] failed. No such file or directory
5/21/16 3:11:36.745 AM coresymbolicationd[2338]: Unable to open storage at /System/Library/Caches/com.apple.coresymbolicationd/data
5/21/16 3:11:36.746 AM com.apple.xpc.launchd[1]: (com.apple.coresymbolicationd) Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
5/21/16 3:11:37.799 AM ReportCrash[2337]: Invalid connection: com.apple.coresymbolicationd
5/21/16 3:11:41.200 AM ReportCrash[2337]: Saved crash report for AirDrop[2336] version 1.0 (435) to /Users/Ahmed/Library/Logs/DiagnosticReports/AirDrop_2016-05-21-031141_Ahmed-Alh arbi.crash
5/21/16 3:11:41.201 AM ReportCrash[2337]: Removing excessive log: file:///Users/Ahmed/Library/Logs/DiagnosticReports/AirDrop_2016-05-15-104117_Ah med-Alharbi.crash
5/21/16 3:11:46.000 AM kernel[0]: Sandbox: coresymbolicatio(2339) System Policy: deny(1) file-write-create /System/Library/Caches/com.apple.coresymbolicationd
5/21/16 3:11:46.763 AM coresymbolicationd[2339]: /System/Library/Caches/com.apple.coresymbolicationd/data does not exist, resetting cache
5/21/16 3:11:46.763 AM coresymbolicationd[2339]: Attempt to create [/System/Library/Caches/com.apple.coresymbolicationd/data] failed. No such file or directory
5/21/16 3:11:46.763 AM coresymbolicationd[2339]: Unable to open storage at /System/Library/Caches/com.apple.coresymbolicationd/data
5/21/16 3:11:46.764 AM com.apple.xpc.launchd[1]: (com.apple.coresymbolicationd) Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
--------------
Thanks in advance