iOS Simulator cannot start

I have upgraded my Mac to OS X El Capitan (version 10.11.4) and updated Xcode (version 7.3 (7D175)). I’m working on Xamarin (version 5.10.3 (build 27)). I get all iOS Simulator components (from Xcode Preferences/Components), versions 8.1, 8.2, 8.3, 8.4, 9.0, 9.1 and 9.2, no version 9.3 available..

After all upgrades and a restart I open my project in Xamarin and launch it and an error message raise to say that the iOS Simulator cannot start. I tried to create a new project on Xcode (to see if it was related to Xamarin), tried to launch it and the same issue occurs.

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  • This is the crash report:

    Process:               Simulator [1497]
    Path:                  /Applications/
    Version:               ???
    Build Info:            Indigo-645009000000000~27
    Code Type:             X86-64 (Native)
    Parent Process:        ??? [1]
    Responsible:           Simulator [1497]
    User ID:               1283659680
    Date/Time:             2016-03-31 10:53:04.204 +0200
    OS Version:            Mac OS X 10.11.4 (15E65)
    Report Version:        11
    Anonymous UUID:        5CBF8D9C-B1CD-87AC-FF01-AD5337903E26
    Time Awake Since Boot: 2300 seconds
    System Integrity Protection: enabled
    Crashed Thread:        0
    Exception Type:        EXC_BREAKPOINT (SIGTRAP)
    Exception Codes:       0x0000000000000002, 0x0000000000000000
    Exception Note:        EXC_CORPSE_NOTIFY
    Application Specific Information:
    dyld: launch, loading dependent libraries
    Dyld Error Message:
    Library not loaded: /usr/local/lib/libwep
    Referenced from: /Applications/
    Reason: no suitable image found.  Did find:
    /usr/local/lib/libwep: mmap() error 1 at address=0x10DEC0000, size=0x00008000 segment=__TEXT in Segment::map() mapping /usr/local/lib/libwep
    Binary Images:
    0x7fff6dae7000 -     0x7fff6db1e0d7  dyld (360.21) <D9B236BC-4AC1-325F-B3EF-3F06DBDA7119> /usr/lib/dyld
    0x7fff8b48d000 -     0x7fff8b502fff (2.0.2 - 1179.40.20) <FB2AD43B-905D-3BD0-BE17-ACE7D4D13E24> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
    0x7fff8b995000 -     0x7fff8bd00657  libobjc.A.dylib (680) <D55D5807-1FBE-32A5-9105-44D7AFE68C27> /usr/lib/libobjc.A.dylib
    0x7fff8c4f6000 -     0x7fff8c6c4ff3 (1.11 - 410.14) <0283748A-8318-36AC-8B30-8A951FEB305A> /System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore
    0x7fff8e1d1000 -     0x7fff8e1f9fff (1.0 - 56) <E5E5A6F0-E6FC-3D40-81E4-A3E627929FD0> /System/Library/Frameworks/GLKit.framework/Versions/A/GLKit
    0x7fff904f8000 -     0x7fff904f8fff (154 - 157) <8F6ED602-5943-3E29-A793-BC331E2C183D> /System/Library/Frameworks/Carbon.framework/Versions/A/Carbon
    0x7fff93d01000 -     0x7fff93d02ffb  libSystem.B.dylib (1226.10.1) <CD307E99-FC5C-3575-BCCE-0C861AA63124> /usr/lib/libSystem.B.dylib
    0x7fff9583f000 -     0x7fff95cb5fff (6.9 - 1258.1) <943A1383-DA6A-3DC0-ABCD-D9AEB3D0D34D> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
    0x7fff96177000 -     0x7fff96179fff (1.0 - 1) <F3E14561-5DF4-3429-98ED-8F27A87A343A> /System/Library/Frameworks/ServiceManagement.framework/Versions/A/ServiceManagement
    0x7fff9a5d3000 -     0x7fff9a5e1fff (12.0.40 - 12.0.40) <AEA28993-BA3E-3E0F-A2F5-88C312ABB634> /System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL
    0x7fff9ac23000 -     0x7fff9b84cfff (6.9 - 1404.46) <2492D315-76B6-320B-B542-231FCA44CA48> /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
    0x7fff9cf39000 -     0x7fff9d28dfff (6.9 - 1258) <51833143-6CAE-3E1C-9FBA-BCDEB48D4ADF> /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
    0x7fff9e27d000 -     0x7fff9f4e5ffb (1.600.0 - 957) <C403FF5C-1B6F-3810-90B1-F5477828A701> /System/Library/Frameworks/CoreGraphics.framework/Versions/A/CoreGraphics
    0x7fffa02a8000 -     0x7fffa02ccfff (304.10.2 - 304.10.2) <CE75EDA3-2B22-3968-834E-550EA870ECC8> /System/Library/PrivateFrameworks/MultitouchSupport.framework/Versions/A/MultitouchSupport
    0x7fffa1542000 -     0x7fffa1882fff (11601 - 11601.5.17.1) <6FA46AD7-3DF1-3654-A642-D9C5BE613ED7> /System/Library/Frameworks/WebKit.framework/Versions/A/WebKit

    I don’t understand why the /usr/local/lib/libwep library is not loading.
    There is no explicit message or information to understand the issue and try to fix it. I do not find a lot help on similar issues.

    I tried this solution, but it just removed the iOS Simulator components that I just download with Xcode.

    I need help, if you have any ideas, as I can’t debug anymore until this simulator will start.

    Solutions Collect From Internet About “iOS Simulator cannot start”

    The issue is caused by your use of WebSense. This software injects a library (usr/local/lib/libwep) into every process, and that practice is not valid for processes utilizing library validation for increased security. is one such process that is making use of library validation.

    You need to reach out to WebSense for a compatible update to their software.