軟膏の混合と混合でない単品の処方が重なったときにエラーになるようです。

Version:20180620版
System.ArgumentOutOfRangeException: インデックスが範囲を超えています。負でない値で、コレクションのサイズよりも小さくなければなりません。
パラメーター名:index
場所 System.Collections.ArrayList.get_Item(Int32 index)
場所 System.Windows.Forms.DataGridViewRowCollection.SharedRow(Int32 rowIndex)
場所 System.Windows.Forms.DataGridViewRowCollection.get_Item(Int32 index)
場所 WindowsApplication1.Models.YakutaiDataGridView.get_Item(Int32 index)
場所 WindowsApplication1.Print.DocumentNormal.gaiyou()
場所 WindowsApplication1.Print.DocumentNormal.Draw外用明細(IPrintPageEventArgs e, Int32 ページ内の薬品種類数, Single& y)
場所 WindowsApplication1.Print.DocumentNormal.OnPrintPage(IPrintPageEventArgs e)
場所 WindowsApplication1.Print.BaseDocument.OnPrintPage(PrintPageEventArgs e)
場所 System.Drawing.Printing.PrintDocument._OnPrintPage(PrintPageEventArgs e)
場所 System.Drawing.Printing.PrintController.PrintLoop(PrintDocument document)
場所 System.Drawing.Printing.PrintController.Print(PrintDocument document)
場所 System.Drawing.Printing.PrintDocument.Print()
場所 System.Windows.Forms.PrintPreviewControl.ComputePreview()
場所 System.Windows.Forms.PrintPreviewControl.CalculatePageInfo()
場所 System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme)
場所 System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)
場所 System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
場所 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
場所 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
場所 System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)
場所 System.Windows.Forms.Control.InvokeMarshaledCallbacks()

mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
RPPMAN, Version=2.99.6745.30199, Culture=neutral, PublicKeyToken=null
System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
GalaSoft.MvvmLight, Version=5.3.0.19038, Culture=neutral, PublicKeyToken=0e453835af4ee6ce
System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
System.Xaml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
System.Configuration, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
SimpleInjector, Version=3.2.2.0, Culture=neutral, PublicKeyToken=984cb50dea722e99
System.Runtime, Version=2.6.10.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
RPPLib, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
Microsoft.Practices.ServiceLocation, Version=1.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
mscorlib.resources, Version=4.0.0.0, Culture=ja, PublicKeyToken=b77a5c561934e089
Anonymously Hosted DynamicMethods Assembly, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null
SimpleInjector.Compiled, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null
PresentationFramework.Aero, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
System.Threading.Tasks, Version=2.6.10.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
Microsoft.Threading.Tasks, Version=1.0.12.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
PresentationFramework-SystemXml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
PresentationCore.resources, Version=4.0.0.0, Culture=ja, PublicKeyToken=31bf3856ad364e35
UIAutomationTypes, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
System.Deployment, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
System.Deployment.resources, Version=4.0.0.0, Culture=ja, PublicKeyToken=b03f5f7f11d50a3a
Microsoft.VisualBasic, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
System.Data.resources, Version=4.0.0.0, Culture=ja, PublicKeyToken=b77a5c561934e089
System.Transactions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
System.EnterpriseServices, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
System.Numerics, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
System.Data.DataSetExtensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
RPPMAN薬袋, Version=2.6.6745.30117, Culture=neutral, PublicKeyToken=null
System.Windows.Forms.resources, Version=4.0.0.0, Culture=ja, PublicKeyToken=b77a5c561934e089