Crystal Reports XML Data Source and AutoLink

Message

I'm using the Report Wizart to import an XML file and I'm getting the message "Unable to smart link unlinked tables". Why is this happening?

I am also including the schema file which indicates primary and foreign keys.

Much thanks ....
Rwinters

<SNIP>

XML File

?xml version="1.0" encoding="UTF-8"?>
<Organization xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" >
      <dept>
            <Deptno>10</Deptno>
            <Dname>Accounting</Dname>
            <Loc>Dallas</Loc>
      </dept>
      <dept>
            <Deptno>20</Deptno>
            <Dname>Production</Dname>
            <Loc>New York</Loc>
      </dept>
      <Employee>
            <Empno>1001</Empno>
            <Ename>Jag</Ename>
            <Sal>2500</Sal>
            <Deptno>10</Deptno>
      </Employee>
      <Employee>
            <Empno>1002</Empno>
            <Ename>Win</Ename>
            <Sal>2600</Sal>
            <Deptno>20</Deptno>
      </Employee>
</Organization>

--Schema File

<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">

<xs:complexType name="DeptType">

<xs:sequence>

<xs:element name="Deptno" type="xs:int" />

<xs:element name="Dname" type="xs:string" />

<xs:element name="Loc" type="xs:string" />

</xs:sequence>

</xs:complexType>

<xs:element name="Organization">

<xs:complexType>

<xs:sequence>

<xs:element maxOccurs="unbounded" name="dept" type="DeptType" />

<xs:element maxOccurs="unbounded" name="Employee" type="EmployeeType" />

</xs:sequence>

</xs:complexType>

<xs:key name="PK_Dept_Deptno">

<xs:selector xpath=".//dept" />

<xs:field xpath="Deptno" />

</xs:key>

<xs:key name="PK_Employee_Empno">

<xs:selector xpath=".//Employee" />

<xs:field xpath="Empno" />

</xs:key>

<xs:keyref name="FK_deptEmployee" refer="PK_Dept_Deptno">

<xs:selector xpath=".//Employee" />

<xs:field xpath="Deptno" />

</xs:keyref>

</xs:element>

<xs:complexType name="EmployeeType">

<xs:sequence>

<xs:element name="Empno" type="xs:int" />

<xs:element name="Ename" type="xs:string" />

<xs:element name="Sal" type="xs:float" />

<xs:element name="Deptno" type="xs:int" />

</xs:sequence>

</xs:complexType>

</xs:schema>