C# -- small DataSet issue

How can I fix the below so the
"CheckViewDedcode" column
populates correctly ?

Steps
 1. run below
 2. works.jpg shows column "CheckViewDedcode" has all values
 3. change attached "DEDUCTIONS.CSV" cell D4 from alpha to number
 4. run below again
 5. fails.jpg shows column "CheckViewDedcode" do NOT have all values

        private DataSet ReadFile(string filePath)
        {
            string connectionString = String.Format(
                @"Provider=Microsoft.Jet.OleDb.4.0;Data Source={0};Extended Properties=""Text;HDR=Yes;FMT=Delimited""",
                System.IO.Path.GetDirectoryName(filePath));

            using (OleDbConnection conn = new OleDbConnection(connectionString))
            {
                string command = String.Format(
                    @"SELECT * FROM {0}", System.IO.Path.GetFileName(filePath));
                using (OleDbDataAdapter adapter = new OleDbDataAdapter(command, conn))
                {
                    DataSet ds = new DataSet("Temp");
                    adapter.Fill(ds);

                    // Loop through the data table and change names like "Doe,John" to "John Doe"
                    //foreach (DataRow row in ds.Tables[0].Rows)
                     //   row[0] = Regex.Replace((string)row[0], @"([^,]*),([^,]*)", "$2 $1");

                     return ds;
                }
            }
        }
works.jpg
fails.jpg
DEDUCTIONS.CSV