提示线程异常，软件自动关闭

酷月追风

开了8个查询界面捡漏，然后将软件最小化。运行一段时间（不超过5分钟）就弹出错误提示并自动结束，连在界面上填反馈信息的时间都没有：


错误信息
-----------------------------------------------------
System.ArgumentNullException: 值不能为 null。
参数名: source
   在 System.Linq.Enumerable.FirstOrDefault[TSource](IEnumerable`1 source, Func`2 predicate)
   在 ..
(String ) 位置 #Xe:行号 364
   在 ..
(Object ,  ) 位置 #ee:行号 124
   在 ..(Object ,  ) 位置 #Zd:行号 149
   在 ..( ) 位置 #ce:行号 133
   在 ..
[
](Uri , Uri , HttpMethod , Object , Boolean , Action`1 ) 位置 #gc:行号 404
   在 ..
[
](String , String , HttpMethod , Object , Action`1 ) 位置 #ce:行号 205
   在 ..() 位置 #Oe:行号 222
   在 ..
(Object ) 位置 #Oe:行号 16777215
   在 System.Threading.QueueUserWorkItemCallback.WaitCallback_Context(Object state)
   在 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
   在 System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
   在 System.Threading.ThreadPoolWorkQueue.Dispatch()
   在 System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()


环境信息
-----------------------------------------------------
操作系统版本：Microsoft Windows NT 6.1.7600.0
程序运行目录：C:\Users\Administrator\Desktop\12306订票助手.NET


模块信息
-----------------------------------------------------
[001]. mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 , C:\Windows\Microsoft.NET\Framework\v4.0.30319\mscorlib.dll
[002]. 12306订票助手, Version=2.5.6.850, Culture=neutral, PublicKeyToken=063375134da4cdc3 , C:\Users\Administrator\Desktop\12306订票助手.NET\12306订票助手.exe
[003]. System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 , C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Windows.Forms\v4.0_4.0.0.0__b77a5c561934e089\System.Windows.Forms.dll
[004]. System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a , C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Drawing\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll
[005]. System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 , C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll
[006]. System.Configuration, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a , C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll
[007]. System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 , C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Xml\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.dll
[008]. System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 , C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Core\v4.0_4.0.0.0__b77a5c561934e089\System.Core.dll
[009]. mscorlib.resources, Version=4.0.0.0, Culture=zh-Hans, PublicKeyToken=b77a5c561934e089 , C:\Windows\Microsoft.Net\assembly\GAC_MSIL\mscorlib.resources\v4.0_4.0.0.0_zh-Hans_b77a5c561934e089\mscorlib.resources.dll
[010]. Newtonsoft.Json, Version=4.5.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed , C:\Users\Administrator\Desktop\12306订票助手.NET\Newtonsoft.Json.dll
[011]. System.ComponentModel.DataAnnotations, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 , C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.ComponentModel.DataAnnotations\v4.0_4.0.0.0__31bf3856ad364e35\System.ComponentModel.DataAnnotations.dll
[012]. System.Runtime.Serialization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 , C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Runtime.Serialization\v4.0_4.0.0.0__b77a5c561934e089\System.Runtime.Serialization.dll
[013]. System.Xml.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 , C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Xml.Linq\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.Linq.dll
[014]. System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 , C:\Windows\Microsoft.Net\assembly\GAC_32\System.Data\v4.0_4.0.0.0__b77a5c561934e089\System.Data.dll
[015]. BetterListViewExpress, Version=3.8.2.0, Culture=neutral, PublicKeyToken=e6c91a3add447be2 , C:\Users\Administrator\Desktop\12306订票助手.NET\BetterListViewExpress.dll
[016]. SimpleUpdater, Version=2.3.4.5, Culture=neutral, PublicKeyToken=8bf54bd6729f490c , C:\Users\Administrator\Desktop\12306订票助手.NET\SimpleUpdater.dll
[017]. ?, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null ,  不可用信息 (动态程序集)
[018]. Accessibility, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a , C:\Windows\Microsoft.Net\assembly\GAC_MSIL\Accessibility\v4.0_4.0.0.0__b03f5f7f11d50a3a\Accessibility.dll
[019]. System.Windows.Forms.resources, Version=4.0.0.0, Culture=zh-Hans, PublicKeyToken=b77a5c561934e089 , C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Windows.Forms.resources\v4.0_4.0.0.0_zh-Hans_b77a5c561934e089\System.Windows.Forms.resources.dll
[020]. z25x1zu1, Version=2.3.4.5, Culture=neutral, PublicKeyToken=null ,
[021]. System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a , C:\Windows\Microsoft.Net\assembly\GAC_32\System.Web\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Web.dll
[022]. System.resources, Version=4.0.0.0, Culture=zh-Hans, PublicKeyToken=b77a5c561934e089 , C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.resources\v4.0_4.0.0.0_zh-Hans_b77a5c561934e089\System.resources.dll