Not able to save after deleting rows using EPPlus - epplus

Question

I have a very simple code to open a copy template excel file put some data into it and delete the remaining empty rows. This works with most of the template files but with few of them i get exception when i try to save the file after deleting not required rows.
In the sample code i have omitted the data addition code and just kept the delete row functionality. When i run this code i get error if i try to delete rows after 1025.
static void Main(string[] args)
{
try
{
FileInfo fis = new FileInfo(#"D:\ExcelTest\TestFile.xlsx");
FileInfo fi = new FileInfo(Path.Combine(fis.DirectoryName, Guid.NewGuid() + fis.Extension));
fis.CopyTo(fi.FullName);
using (ExcelPackage excelPackage = new ExcelPackage(fi))
{
ExcelWorksheet worksheet = excelPackage.Workbook.Worksheets["C3R"];
int rowstodelete = (171 * 6) - 23;
worksheet.DeleteRow(24, rowstodelete, true);
excelPackage.Save();
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
System.InvalidOperationException: Error saving file D:\ExcelTest\fabf5a3f-714f-4422-a760-73190f34b951.xlsx ---> System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.\r\n at System.Collections.Generic.Dictionary`2.get_Item(TKey key)\r\n at OfficeOpenXml.ExcelWorksheet.UpdateRowCellData(StreamWriter sw)\r\n at OfficeOpenXml.ExcelWorksheet.SaveXml(Stream stream)\r\n at OfficeOpenXml.ExcelWorksheet.SaveHandler(ZipOutputStream stream, CompressionLevel compressionLevel, String fileName)\r\n at OfficeOpenXml.Packaging.ZipPackagePart.WriteZip(ZipOutputStream os)\r\n at OfficeOpenXml.Packaging.ZipPackage.Save(Stream stream)\r\n at OfficeOpenXml.ExcelPackage.Save()\r\n --- End of inner exception stack trace ---\r\n at OfficeOpenXml.ExcelPackage.Save()\r\n at ConsoleApplication1.Program.Main(String[] args) in C:\Users\sm511\Documents\Visual Studio 2015\Projects\ConsoleApplication1\Program.cs:line 27
The excel file causing problem