AccountRight Application Error Report ===================================== Application Version: 2020.2.23.8701 Application File Version: 2020.2.23.8701 Incident Id: 823b3aa2-dfe6-443b-a02f-7431e73fd441 Time: Monday, 25 May 2020 2:16:25 PM Code: System.InvalidOperationException Message: Sequence contains more than one matching element Stack Trace ---------------------------------------- 1 : System.InvalidOperationException ---------------------------------------- System.InvalidOperationException: Sequence contains more than one matching element at System.Core!0x06000b8d!System.Linq.Enumerable.SingleOrDefault[TSource](IEnumerable`1 source, Func`2 predicate) +0x11 at Huxley.UI.Controllers!0x060031db!MYOB.Huxley.UI.Controllers.ImportExport.ImportValidationExtensions.<>c__DisplayClass9_0.b__0(Int32 i) +0x24 at System.Core!0x06001bd0!System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext() +0x4d at mscorlib!0x060039cd!System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) +0x77 at System.Core!0x06000b70!System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source) +0xe at Huxley.UI.Controllers!0x06002605!MYOB.Huxley.UI.Controllers.ImportExport.ImportValidationExtensions.GetMappedHeaders(IImportExportSettings settings) +0x2f at Huxley.UI.Controllers!0x0600268d!MYOB.Huxley.UI.Controllers.ImportExport.ImportExportController.ValidateMappings(IImportExportSettings settings) +0x0 at Huxley.UI.Controllers!0x0600268e!MYOB.Huxley.UI.Controllers.ImportExport.ImportExportController.ValidateImportMappings(List`1& validationCodes) +0xd at Huxley.UI.Forms!0x06001b85!MYOB.Huxley.UI.Forms.ImportExportWizard.ImportExportWizard.OnCustomRight1Clicked(ButtonClickedArgs args) +0x170 at Huxley.UI.Forms!0x06002ec5!MYOB.Huxley.UI.Forms.BaseForms.BaseViewForm.CallButtonClicked(Action`1 execute, ButtonClickedArgs args, String buttonText) +0x12 at Huxley.UI.Forms!0x06002e41!MYOB.Huxley.UI.Forms.BaseForms.BaseViewForm.btnCustom1_Click(Object sender, EventArgs e) +0x30 at System.Windows.Forms!0x06000e16!System.Windows.Forms.Control.OnClick(EventArgs e) +0x19 at DevExpress.XtraEditors.v17.1!0x06000d4f!DevExpress.XtraEditors.BaseButton.OnClick(EventArgs e) +0x2e at DevExpress.XtraEditors.v17.1!0x06000d48!DevExpress.XtraEditors.BaseButton.OnMouseUp(MouseEventArgs e) +0x1d at System.Windows.Forms!0x06000efd!System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) +0x184 at System.Windows.Forms!0x06000f0d!System.Windows.Forms.Control.WndProc(Message& m) +0x62c at DevExpress.Utils.v17.1!0x06002708!DevExpress.Utils.Controls.ControlBase.WndProc(Message& m) +0x2e at DevExpress.XtraEditors.v17.1!0x06000256!DevExpress.XtraEditors.BaseControl.WndProc(Message& msg) +0x0 at System.Windows.Forms!0x0600571b!System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) +0x0 at System.Windows.Forms!0x0600571e!System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) +0x8e at System.Windows.Forms!0x06002def!System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) +0x25 ========== MODULE: DevExpress.Utils.v17.1 => DevExpress.Utils.v17.1, Version=17.1.7.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a; G:b8c34c059b804930811d5f6d50999b6c; A:1 MODULE: DevExpress.XtraEditors.v17.1 => DevExpress.XtraEditors.v17.1, Version=17.1.7.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a; G:6df94e55f5bd4444b910d4b2a37076a4; A:1 MODULE: Huxley.UI.Controllers => Huxley.UI.Controllers, Version=2020.2.23.8701, Culture=neutral, PublicKeyToken=947f70fecdd4159f; G:3b4576e5a1cf4ee997c5f4dc442c384f; A:1 MODULE: Huxley.UI.Forms => Huxley.UI.Forms, Version=2020.2.23.8701, Culture=neutral, PublicKeyToken=947f70fecdd4159f; G:0ef4382a300445748fbf1e3cc9e8b5ad; A:1 MODULE: mscorlib => mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; G:8ee3ac10e8654305997326732dac737e; A:2 MODULE: System.Core => System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; G:989cb0abdee3456598e43d7ee013eb85; A:2 MODULE: System.Windows.Forms => System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089; G:f151916e8df143d3846906613de0068f; A:1 ----------------------------------------