ystem.ArgumentOutOfRangeException: Non-negative number required.Parameter name: value at System.IO.FileStream.set_Position(Int64 value) at _7thWrapperLib.IrosArc.GetBytes(String name) in C:\Iros\7thWrapperLib\IrosArc.cs:line 172 at Iros._7th.Workshop.fImportMod.<>c__DisplayClassa.<ImportMod>b__6(String s) in C:\Iros\7thWorkshop\fImportMod.cs:line 77 at Iros._7th.Workshop.fImportMod.ImportMod(String source, String name, Boolean iroMode) in C:\Iros\7thWorkshop\fImportMod.cs:line 85 at Iros._7th.Workshop.fImportMod.bOK_Click(Object sender, EventArgs e) in C:\Iros\7thWorkshop\fImportMod.cs:line 109 at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)