DataTable does not match to any DataTable in source

Trying to create a program to read from an XML file and put the data into a DataTable inside of a DataSet. The problem I am facing at the moment is that I keep getting the error "DataTable 'baseDataTable' does not match any DataTable in source". Here is my code (all made active by button press).

Main form:

Code:
FileStream fs = new FileStream("NPCBase.xml", FileMode.Open, FileAccess.Read);
DataSet baseDataSet = new DataSet("baseDataSet");
DataTable baseDataTable = new DataTable("baseDataTable");
baseDataSet.Tables.Add(baseDataTable);
baseDataSet.Tables["baseDataTable"].ReadXmlSchema("NPCBase.xsd");
baseDataSet.Tables["baseDataTable"].ReadXml("NPCBase.xml");
dataGridView1.DataSource = baseDataSet;
dataGridView1.DataMember = "baseDataTable";
NPCList.xml:

Code:






Guy#1




Guy#2




Schema:

Code: