Kernow: SXXP0003: Error reported by XML parser: Content is not allowed in prolog
===

 When I try to upload the following xml document into Kernow, I get the following error:

    Error on line 1 column 1 of file:/Users/rdp/Desktop/Kernow/:
      SXXP0003: Error reported by XML parser: Content is not allowed in prolog.
    javax.xml.transform.TransformerConfigurationException: Failed to compile stylesheet. 1 error detected.

I think my file is UTF-8, because when I run `hexdump`, the first two bytes are `3c 3f`, and I read that If the two bytes are `3c` followed by a nonzero byte, the encoding is UTF-8

Any ideas?

    <?xml version="1.0" ?>
    <!DOCTYPE Bookstore [
       <!ELEMENT Bookstore (Book | Magazine)*>
       <!ELEMENT Book (Title, Authors, Remark?)>
       <!ATTLIST Book ISBN CDATA #REQUIRED
                      Price CDATA #REQUIRED
                      Edition CDATA #REQUIRED>
       <!ELEMENT Magazine (Title)>
       <!ATTLIST Magazine Month CDATA #REQUIRED Year CDATA #REQUIRED>
       <!ELEMENT Title (#PCDATA)>
       <!ELEMENT Authors (Author+)>
       <!ELEMENT Remark (#PCDATA)>
       <!ELEMENT Author (First_Name, Last_Name)>
       <!ELEMENT First_Name (#PCDATA)>
       <!ELEMENT Last_Name (#PCDATA)>
    ]>
    <Bookstore>
       <Magazine Month="2" Year="2012">
       </Magazine>
       <Book ISBN="ISBN-0-13-713526-2" Price="85" Edition="3rd">
          <Title>A First Course in Database Systems</Title>
          <Authors>
             <Author>
               <First_Name>Jeffrey</First_Name>
               <Last_Name>Ullman</Last_Name>
             </Author>
             <Author>
                <First_Name>Jennifer</First_Name>
                <Last_Name>Widom</Last_Name>
             </Author>
          </Authors>
          <Remark></Remark>
       </Book>
       <Book ISBN="ISBN-0-13-815504-6" Price="100" Edition="1st">
          <Title>Database Systems: The Complete Book</Title>
          <Authors>
             <Author>
                <First_Name>Hector</First_Name>
                <Last_Name>Garcia-Molina</Last_Name>
             </Author>
             <Author>
                <First_Name>Jeffrey</First_Name>
                <Last_Name>Ullman</Last_Name>
             </Author>
             <Author>
                <First_Name>Jennifer</First_Name>
                <Last_Name>Widom</Last_Name>
             </Author>
          </Authors>
          <Remark>                                                                  
             Buy this book bundled with "A First Course" - a great deal!            
          </Remark>
       </Book>
    </Bookstore>