crash issue

Hi, I occurred crash issue when I close the window of app.(Standalone)

This is my stacktrace.

0x1007B84E (UnityEngine.Core) mono_security_set_mode
0x1007B8C2 (UnityEngine.Core) mono_security_set_mode
0x1007BB10 (UnityEngine.Core) mono_thread_pool_cleanup
0x100445A3 (UnityEngine.Core) mono_marshal_string_to_utf16
0x05868813 (Mono JIT Code) (wrapper managed-to-native) object:__icall_wrapper_mono_delegate_begin_invoke (object,intptr)
0x058687DC (Mono JIT Code) (wrapper delegate-begin-invoke) System.Net.Sockets.Socket/SocketAsyncCall:begin_invoke_IAsyncResult__this___AsyncCallback_object (System.AsyncCallback,object)
0x0586AF28 (Mono JIT Code) System.Net.Sockets.Socket:BeginReceive (byte[],int,int,System.Net.Sockets.SocketFlags,System.AsyncCallback,object)
0x0586C144 (Mono JIT Code) SocketTCP:OnReceive (System.IAsyncResult)
0x0586A025 (Mono JIT Code) System.Net.Sockets.Socket/SocketAsyncResult:Complete ()
0x0586BB67 (Mono JIT Code) System.Net.Sockets.Socket/Worker:Receive ()
0x0580E9F1 (Mono JIT Code) (wrapper runtime-invoke) object:runtime_invoke_void__this__ (object,intptr,intptr,intptr)
0x100F0794 (UnityEngine.Core) mono_set_defaults
0x1005D8AB (UnityEngine.Core) mono_runtime_invoke
0x100626FD (UnityEngine.Core) mono_runtime_invoke_array
0x10062994 (UnityEngine.Core) mono_runtime_invoke_array
0x1007A391 (UnityEngine.Core) mono_security_set_mode
0x1007AFDC (UnityEngine.Core) mono_security_set_mode
0x1007DB71 (UnityEngine.Core) mono_thread_interruption_request_flag
0x1010B82A (UnityEngine.Core) unity_mono_method_is_generic
0x755A3744 (KERNEL32) BaseThreadInitThunk
0x77C29E54 (ntdll) RtlSetCurrentTransaction
0x77C29E1F (ntdll) RtlSetCurrentTransaction

But unity patch 5.3.2p1 fixes issue 759459.(Mono: Corrected a crash in mono_string_to_utf8_checked when Marshal.StructureToPtr is called from managed code) or unity patch 5.3.4p1 fixes issue 775244(Fixed access to destroyed window during shutdown)

Is there Relationship?

@GoodBen

That is not very much to go on to help you with your question. What happens when you reopen Unity? Try closing Unity then deleting the Library folder. When you restart Unity the Library folder will be automatically rebuilt. Deleting the Library folder will not harm your project it is just sometimes the folder becomes corrupted and must be deleted.

@GoodBen,Hi,I wonder if the problem has been solved ,thanks.