APEX

I Cannot create PDF reports via Apex using.

1)I have installed Oracle XE, updated Apex to Application Express 4.2.4.00.08

2) In Instance Settings set report printing to Oracle APEX Listener

3) Created a basic report of demo emp table

4) Set enable reporting printing = "yes"

When I run the report and select pdf I get error message not a vaild pdf.

Open file in wordpad and it contains, below data so does not appear to be converting from XML to PDF.  Any ideas what I'm doing wrong!!:

<?xml version="1.0" encoding="UTF-8"?>

<apexListnerFOP>

<DOCUMENT>

   <DATE>07/03/2014</DATE>

   <USER_NAME>STAFF</USER_NAME>

   <APP_ID>101</APP_ID>

   <APP_NAME>Ridgway Library</APP_NAME>

   <PAGE_ID>12</PAGE_ID>

   <TITLE>Report 1</TITLE>

   <REGION ID="2221822669173184">

      <ROWSET>

         <ROW>

            <EMPNO>7369</EMPNO>

            <ENAME>SMITH</ENAME>

            <JOB>CLERK</JOB>

            <MGR>7902</MGR>

            <HIREDATE>17/12/1980</HIREDATE>

            <SAL>800</SAL>

            <COMM></COMM>

            <DEPTNO>20</DEPTNO>

         </ROW>