相关疑难解决方法(0)

我写了一个带有标题的docbook 5.0文档:

<?xml version="1.0" encoding="UTF-8"?>
<book version="5.0" xmlns="http://docbook.org/ns/docbook"
      xmlns:xlink="http://www.w3.org/1999/xlink"
      xmlns:xi="http://www.w3.org/2001/XInclude"
      xmlns:svg="http://www.w3.org/2000/svg"
      xmlns:m="http://www.w3.org/1998/Math/MathML"
      xmlns:html="http://www.w3.org/1999/xhtml"
      xmlns:db="http://docbook.org/ns/docbook">

和Ubuntu 9.10上的docbook2pdf打印许多错误消息,并且不执行任何pdf文档.错误是:

openjade:test.xml:2:0:E: prolog can't be omitted unless CONCUR NO and LINK EXPLICIT NO and either IMPLYDEF ELEMENT YES or IMPLYDEF DOCTYPE YES
openjade:test.xml:2:0:E: no document type declaration; will parse without validation
openjade:/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbtitle.dsl:18:5:E: flow objects at the root must be all of class scroll or all of class page-sequence or simple-page-sequence
openjade:/usr/share/sgml/docbook/stylesheet/dsssl/modular/print/dbbibl.dsl:704:4:E: flow objects at the root must be all of class scroll or all of …