Object reference not set to an instance of an object.
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:::c#
System.NullReferenceException: Object reference not set to an instance of an object.
at XLToolbox.WorkbookStorage.Item.WriteToSheet(Worksheet sheet, Int32 row) in XLToolbox\WorkbookStorage\Item.cs:line 64
at XLToolbox.WorkbookStorage.Store.WriteToWorksheet() in XLToolbox\WorkbookStorage\Store.cs:line 445
at XLToolbox.WorkbookStorage.Store.Dispose(Boolean disposing) in XLToolbox\WorkbookStorage\Store.cs:line 226
at XLToolbox.WorkbookStorage.Store.Dispose() in XLToolbox\WorkbookStorage\Store.cs:line 214
at XLToolbox.Export.Models.BatchExportSettings.Store(Workbook workbookContext) in XLToolbox\Export\Models\BatchExportSettings.cs:line 112
at XLToolbox.Export.ViewModels.BatchExportSettingsViewModel.DoExport() in XLToolbox\Export\ViewModels\BatchExportSettingsViewModel.cs:line 363
at XLToolbox.Export.ViewModels.BatchExportSettingsViewModel.ConfirmFolder(FileNameMessageContent messageContent) in XLToolbox\Export\ViewModels\BatchExportSettingsViewModel.cs:line 705
at XLToolbox.Export.ViewModels.BatchExportSettingsViewModel.<DoChooseFolder>b__4(FileNameMessageContent content) in XLToolbox\Export\ViewModels\BatchExportSettingsViewModel.cs:line 352
at Bovender.Mvvm.Messaging.Message`1.<>c__DisplayClass2.<Send>b__0()
at Bovender.Mvvm.Actions.FileFolderActionBase.Invoke(Object parameter)
at System.Windows.Interactivity.TriggerBase.InvokeActions(Object parameter)
at Bovender.Mvvm.Actions.NonUiTrigger.Invoke(Object parameter)
at Bovender.Mvvm.Actions.MessageActionExtensions.Invoke(MessageActionBase action, Object parameter)
at XLToolbox.Export.QuickExporter.ChooseFolderMessage_Sent(Object sender, MessageArgs`1 e) in XLToolbox\Export\QuickExporter.cs:line 106
at Bovender.Mvvm.Messaging.Message`1.Send(T messageContent, Action`1 respond)
at XLToolbox.Export.ViewModels.BatchExportSettingsViewModel.DoChooseFolder() in XLToolbox\Export\ViewModels\BatchExportSettingsViewModel.cs:line 350
at XLToolbox.Export.ViewModels.BatchExportSettingsViewModel.<get_ChooseFolderCommand>b__0(Object param) in XLToolbox\Export\ViewModels\BatchExportSettingsViewModel.cs:line 276
at Bovender.Mvvm.DelegatingCommand.Execute(Object parameter)
Message: Object reference not set to an instance of an object.
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