On opening the "Custom Margins" dialog when a specific file was loaded into the SpreadsheetControl, the NullReferenceException is raised with the following callstack:
> DevExpress.Spreadsheet.v15.1.Core.dll!DevExpress.XtraSpreadsheet.Forms.PageSetupViewModel.GetPrintArea() Line 671 + 0x1c bytes C#
DevExpress.Spreadsheet.v15.1.Core.dll!DevExpress.XtraSpreadsheet.Forms.PageSetupViewModel.PageSetupViewModel(DevExpress.XtraSpreadsheet.ISpreadsheetControl Control, DevExpress.XtraSpreadsheet.Forms.PageSetupFormInitialTabPage initialTabPage) Line 177 + 0x8 bytes C#
DevExpress.Spreadsheet.v15.1.Core.dll!DevExpress.XtraSpreadsheet.Commands.ShowPageSetupFormCommandBase.CreateViewModel() Line 75 + 0x41 bytes C#
DevExpress.Spreadsheet.v15.1.Core.dll!DevExpress.XtraSpreadsheet.Commands.ShowPageSetupFormCommandBase.ExecuteCore() Line 71 + 0x3c bytes C#
DevExpress.Spreadsheet.v15.1.Core.dll!DevExpress.XtraSpreadsheet.Commands.SpreadsheetMenuItemSimpleCommand.ForceExecute(DevExpress.Utils.Commands.ICommandUIState state) Line 52 + 0x12 bytes C#
DevExpress.Data.v15.1.dll!DevExpress.Utils.Commands.Command.Execute() Line 131 + 0x10 bytes C#
DevExpress.XtraBars.v15.1.dll!DevExpress.XtraBars.Commands.ControlCommandBarButtonItem<DevExpress.XtraSpreadsheet.SpreadsheetControl,DevExpress.XtraSpreadsheet.Commands.SpreadsheetCommandId>.InvokeCommand() Line 1258 C#
DevExpress.XtraBars.v15.1.dll!DevExpress.XtraBars.Commands.CommandBarController.InvokeItemCommand(DevExpress.XtraBars.Commands.ICommandBarItem item) Line 3499 + 0x12 bytes C#
DevExpress.XtraBars.v15.1.dll!DevExpress.XtraBars.BarItem.OnClick(DevExpress.XtraBars.BarItemLink link) Line 1182 + 0x1b bytes C#
DevExpress.XtraBars.v15.1.dll!DevExpress.XtraBars.BarButtonItem.OnClick(DevExpress.XtraBars.BarItemLink link) Line 263 + 0x32 bytes C#
DevExpress.XtraBars.v15.1.dll!DevExpress.XtraBars.BarItemLink.OnLinkClick() Line 1070 C#
DevExpress.XtraBars.v15.1.dll!DevExpress.XtraBars.BarButtonItemLink.OnLinkAction(DevExpress.XtraBars.BarLinkAction action, object actionArgs) Line 720 C#
DevExpress.XtraBars.v15.1.dll!DevExpress.XtraBars.ViewInfo.BarSelectionInfo.UnPressLink(DevExpress.XtraBars.BarItemLink link) Line 732 + 0x10 bytes C#
DevExpress.XtraBars.v15.1.dll!DevExpress.XtraBars.Controls.CustomLinksControl.OnMouseUp(System.Windows.Forms.MouseEventArgs e) Line 840 + 0x2a bytes C#