Xamarin
A Microsoft open-source app platform for building Android and iOS apps with .NET and C#.
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xamarin forms ios: getting Native Crash Reporting
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(32, 10%, 13%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EW%3C/text%3E%3C/svg%3E)
WillAutioItrax
201
Reputation points
I am getting this using Xamarin Forms and deploying on an iPad Air (4th gen) on iOS 14.8.1. I develop using VS 2019 v 16.11.5. There is no Mac connected.
I get this output in this way: I request VS to deploy and run on the iPad. It does some stuff and eventually displays a message prompting me to start the app on the iPad. Shortly after I do that I get the bulk of these messages and the app dies.
Thanks for looking at this.
2021-11-09 09:17:23.718 Xamarin.PreBuilt.iOS[2236:593764] Xamarin.iOS: Successfully received USB connection from the IDE on port 10000, fd: 6
2021-11-09 09:17:23.721 Xamarin.PreBuilt.iOS[2236:593764] Xamarin.iOS: Processing: 'start profiler: no'
2021-11-09 09:17:23.721 Xamarin.PreBuilt.iOS[2236:593724] Xamarin.iOS: Profiler not loaded (disabled)
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/Xamarin.iOS.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/System.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/Mono.Security.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/Xamarin.PreBuilt.iOS.exe [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/Xamarin.iOS.HotRestart.Application.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/netstandard.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/System.Core.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/System.Xml.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/System.Numerics.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/System.Data.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/System.Transactions.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/System.Data.DataSetExtensions.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/System.Drawing.Common.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/System.IO.Compression.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/System.IO.Compression.FileSystem.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/System.ComponentModel.Composition.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/System.Net.Http.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/System.Runtime.Serialization.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/System.ServiceModel.Internals.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/System.Web.Services.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/System.Xml.Linq.dll [External]
Thread started: #2
2021-11-09 09:17:25.273 Xamarin.PreBuilt.iOS[2236:593724] Content folder: /var/mobile/Containers/Data/Application/C46A6DC2-756D-4547-A385-CD460B7290C4/Documents/i_TraxMobile.iOS.content
Thread started: #3
Thread started: <Thread Pool> #4
Thread started: <Thread Pool> #5
Thread started: <Thread Pool> #6
Thread started: <Thread Pool> #7
2021-11-09 09:17:25.577 Xamarin.PreBuilt.iOS[2236:593724] Forms app path /var/mobile/Containers/Data/Application/C46A6DC2-756D-4547-A385-CD460B7290C4/Documents/i_TraxMobile.iOS.content/i_TraxMobile.iOS.exe
2021-11-09 09:17:25.578 Xamarin.PreBuilt.iOS[2236:593724] Xamarin.iOS: Unable to locate assembly 'i_TraxMobile' (culture: '')
2021-11-09 09:17:25.578 Xamarin.PreBuilt.iOS[2236:593724] Xamarin.iOS: Unable to locate assembly 'i_TraxMobile' (culture: '')
2021-11-09 09:17:25.579 Xamarin.PreBuilt.iOS[2236:593724] Xamarin.iOS: Unable to locate assembly 'Xamarin.Forms.Platform.iOS' (culture: '')
2021-11-09 09:17:25.579 Xamarin.PreBuilt.iOS[2236:593724] Xamarin.iOS: Unable to locate assembly 'Xamarin.Forms.Platform.iOS' (culture: '')
2021-11-09 09:17:25.580 Xamarin.PreBuilt.iOS[2236:593724] Xamarin.iOS: Unable to locate assembly 'Xamarin.Forms.Core' (culture: '')
2021-11-09 09:17:25.580 Xamarin.PreBuilt.iOS[2236:593724] Xamarin.iOS: Unable to locate assembly 'Xamarin.Forms.Core' (culture: '')
2021-11-09 09:17:25.581 Xamarin.PreBuilt.iOS[2236:593724] Xamarin.iOS: Unable to locate assembly 'Syncfusion.SfAutoComplete.XForms.iOS' (culture: '')
2021-11-09 09:17:25.582 Xamarin.PreBuilt.iOS[2236:593724] Xamarin.iOS: Unable to locate assembly 'Syncfusion.SfAutoComplete.XForms' (culture: '')
2021-11-09 09:17:25.582 Xamarin.PreBuilt.iOS[2236:593724] Xamarin.iOS: Unable to locate assembly 'Syncfusion.SfAutoComplete.XForms' (culture: '')
Loaded assembly: /private/var/mobile/Containers/Data/Application/C46A6DC2-756D-4547-A385-CD460B7290C4/Documents/i_TraxMobile.iOS.content/i_TraxMobile.iOS.exe
2021-11-09 09:17:25.581 Xamarin.PreBuilt.iOS[2236:593724] Xamarin.iOS: Unable to locate assembly 'Syncfusion.SfAutoComplete.XForms.iOS' (culture: '')
2021-11-09 09:17:25.583 Xamarin.PreBuilt.iOS[2236:593724] Xamarin.iOS: Unable to locate assembly 'Syncfusion.Core.XForms' (culture: '')
Loaded assembly: /private/var/mobile/Containers/Data/Application/C46A6DC2-756D-4547-A385-CD460B7290C4/Documents/i_TraxMobile.iOS.content/i_TraxMobile.dll
2021-11-09 09:17:25.583 Xamarin.PreBuilt.iOS[2236:593724] Xamarin.iOS: Unable to locate assembly 'Syncfusion.Core.XForms' (culture: '')
Loaded assembly: /private/var/mobile/Containers/Data/Application/C46A6DC2-756D-4547-A385-CD460B7290C4/Documents/i_TraxMobile.iOS.content/Xamarin.Forms.Platform.iOS.dll [External]
Loaded assembly: /private/var/mobile/Containers/Data/Application/C46A6DC2-756D-4547-A385-CD460B7290C4/Documents/i_TraxMobile.iOS.content/Xamarin.Forms.Core.dll [External]
Loaded assembly: /private/var/mobile/Containers/Data/Application/C46A6DC2-756D-4547-A385-CD460B7290C4/Documents/i_TraxMobile.iOS.content/Syncfusion.SfAutoComplete.XForms.iOS.dll [External]
Loaded assembly: /private/var/mobile/Containers/Data/Application/C46A6DC2-756D-4547-A385-CD460B7290C4/Documents/i_TraxMobile.iOS.content/Syncfusion.SfAutoComplete.XForms.dll [External]
Loaded assembly: /private/var/mobile/Containers/Data/Application/C46A6DC2-756D-4547-A385-CD460B7290C4/Documents/i_TraxMobile.iOS.content/Syncfusion.Core.XForms.dll [External]
2021-11-09 09:17:25.625 Xamarin.PreBuilt.iOS[2236:593724] Xamarin.Forms AppDelegate name: AppDelegate
=================================================================
Native Crash Reporting
=================================================================
Got a segv while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================
=================================================================
Native stacktrace:
=================================================================
0x100104124 - /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/Xamarin.PreBuilt.iOS : mono_dump_native_crash_info
0x1000fabe4 - /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/Xamarin.PreBuilt.iOS : mono_handle_native_crash
0x100107afc - /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/Xamarin.PreBuilt.iOS : mono_sigsegv_signal_handler_debug
0x1e8fac29c - /usr/lib/system/libsystem_platform.dylib : <redacted>
0x19db485ec - /usr/lib/system/libdyld.dylib : <redacted>
0x19db38008 - /usr/lib/system/libdyld.dylib : <redacted>
0x19db48418 - /usr/lib/system/libdyld.dylib : <redacted>
0x19db38948 - /usr/lib/system/libdyld.dylib : <redacted>
0x19db48f30 - /usr/lib/system/libdyld.dylib : <redacted>
0x19db489c0 - /usr/lib/system/libdyld.dylib : <redacted>
0x19db4a928 - /usr/lib/system/libdyld.dylib : <redacted>
0x19db3becc - /usr/lib/system/libdyld.dylib : <redacted>
0x1002aa194 - /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/Xamarin.PreBuilt.iOS : do_icall
0x1002a8854 - /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/Xamarin.PreBuilt.iOS : do_icall_wrapper
0x10029f748 - /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/Xamarin.PreBuilt.iOS : interp_exec_method_full
0x10029dcd8 - /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/Xamarin.PreBuilt.iOS : interp_runtime_invoke
0x10010adb4 - /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/Xamarin.PreBuilt.iOS : mono_jit_runtime_invoke
0x1001b7878 - /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/Xamarin.PreBuilt.iOS : mono_runtime_invoke_checked
0x1001bcaec - /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/Xamarin.PreBuilt.iOS : mono_runtime_exec_main_checked
0x1000ef7d8 - /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/Xamarin.PreBuilt.iOS : mono_jit_exec
0x10029bda4 - /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/Xamarin.PreBuilt.iOS : xamarin_main
0x1000b72cc - /private/var/containers/Bundle/Application/B0D6F264-A979-439C-A4D4-B41463120C8F/i_TraxMobile.iOS.app/Xamarin.PreBuilt.iOS : main
0x19db36cf8 - /usr/lib/system/libdyld.dylib : <redacted>
=================================================================
Basic Fault Address Reporting
=================================================================
Memory around native instruction pointer (0x10769b11c):0x10769b10c c3 bc 00 94 e0 03 13 aa 5f 00 03 94 20 00 20 d4 ........_... . .
0x10769b11c f4 4f be a9 fd 7b 01 a9 fd 43 00 91 73 09 00 b0 .O...{...C..s...
0x10769b12c 73 82 2b 91 61 08 00 b0 21 38 2f 91 e0 03 13 aa s.+.a...!8/.....
0x10769b13c 02 00 ae 52 63 bc 00 94 60 82 01 91 ce bc 00 94
...Rc...`.......
=================================================================
Managed Stacktrace:
=================================================================
at <unknown> <0xffffffff>
at ObjCRuntime.Dlfcn:_dlopen <0x00026>
at ObjCRuntime.Dlfcn:dlopen <0x00010>
at ObjCRuntime.Dlfcn:dlopen <0x00010>
at <>c:<Main>b__0_0 <0x0000c>
at System.Action`1:invoke_void_T <0x0007c>
at Xamarin.iOS.HotRestart.Application:LoadFrameworks <0x00072>
at Xamarin.iOS.HotRestart.Application:Run <0x0018e>
at Xamarin.PreBuilt.iOS.Applications:Main <0x0005a>
at <Module>:runtime_invoke_direct_void_string[] <0x00092>
=================================================================
The app has been terminated.
{count} votes
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(22.400000000000002, 3%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EWZ%3C/text%3E%3C/svg%3E)
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 26,146 Reputation points Microsoft Vendor2021-11-10T07:46:48.9+00:00 I 'm afraid you use Xamarin Hot Restart to deploy, segv issue related to hot restart, there are some limilations, you could check your iOS Build settings . You could also update VS to v 16.11.6. In addition, may I ask do you try to create a new Xamarin Forms project to check if the issue still exist?
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WillAutioItrax 201 Reputation points
2022-01-25T21:10:54.377+00:00 @Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) Thanks for your comments.
I am developing from home without a Mac nearby. The Mac is in the Office.
It looks like I need to have Tools->Options->Xamarin->iOS Settings->Enable Hot Restart set to on so that the ap even tries to run. Before too long, while it is starting to display the first Page, it gets a "Native Crash Reporting".
If I uncheck Enable Hot Restart then VS does not display the iPhone that is attached to it. It is hard to run on a device that VS can't see.What did work, is to RDP to the office PC and run on an emulated iPhone. No crash and it looks promising.
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