HI,
I was working with FOP-0.20.4 and my fo had many footnotes in it. Whenever a 
footnote appeared at the last line or after the last word, the FOP will quit 
giving a message null and nothing else. has anybody faced this similar problem, 
or can anybody suggest so that the problem can be handled somehow.

Thanks 

Narinder

here is the fo file:

<?xml version="1.0" encoding="UTF-8"?>
<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format" 
xmlns:fox="http://xml.apache.org/fop/extensions">
  <fo:layout-master-set>
    <fo:simple-page-master master-name="halftitlePage" page-height="612pt" page-
width="396pt" margin-bottom="79pt" margin-left="48pt" margin-right="48pt" 
margin-top="138pt">
      <fo:region-body/>
    </fo:simple-page-master>
  </fo:layout-master-set>
  <fo:page-sequence master-reference="halftitlePage" format="1" initial-page-
number="1">
    <fo:flow flow-name="xsl-region-body">
      <fo:block id="IDA1ZSPB" hyphenate="true" hyphenation-push-character-
count="2" hyphenation-remain-character-count="3" language="en">
        <fo:block id="pg1"/>
        <fo:block font-family="NewBaskerville" font-size="13pt" line-
height="17pt" text-align="justify" text-indent="17pt">
          <fo:inline id="pg6"/>
pamphleteer, had taken strong ground against the measures of the British 
Government injurious to American commerce, wrote as follows in 1808 about the 
practice of seizing British subjects in American ships: “That we, the people of 
America, should engage in ruinous warfare to support a rash opinion, that 
foreign sailors in our merchant ships are to be protected against the power of 
their sovereign, is downright madness.” “Why not,” he wrote again in 1813, 
while the war was raging, “waiving flippant debate, lay down the broad 
principle of national right, on which Great Britain takes her native seamen 
from our merchant ships? Let those who deny the right pay, suffer, and fight, 
to compel an abandonment of the claim. Men of sound mind will see, and men of 
sound principle will acknowledge, its existence.” In his opinion, there was but 
one consistent course to be pursued by those who favored the war with Great 
Britain, which was to insist that she should, without compensation, surrender 
her claim. “If that ground be taken,” he wrote, “the war [on our part] will be 
confessedly, as it is now impliedly, unjust.” Morris was a man honorably 
distinguished in our troubled national history—a member of the<fo:footnote>
            <fo:inline font-family="NewBaskervilleSC" font-size="11pt" line-
height="13.75pt"> <fo:basic-link internal-destination="chap1.6.4">4</fo:basic-
link>
            </fo:inline>
            <fo:footnote-body>
              <fo:block text-align="justify" font-family="NewBaskerville" font-
size="11pt" line-height="13.75pt" id="chap1.6.4" padding-before="0.75pt * 3" 
text-indent="0pt" start-indent="0pt">
                <fo:inline font-family="NewBaskervilleSC">4</fo:inline>.  
Annals of Congress. Thirteenth Congress, vol. ii. pp. <fo:inline font-
family="NewBaskervilleSC">
                  <fo:basic-link internal-destination="pg1563">
                    <fo:page-number-citation ref-id="pg1563"/>    </fo:basic-
link>
                </fo:inline>; <fo:inline font-family="NewBaskervilleSC">1555–
1558</fo:inline>.</fo:block>
            </fo:footnote-body>
          </fo:footnote>
          <fo:inline>­</fo:inline>zation
</fo:block>
      </fo:block>
    </fo:flow>
  </fo:page-sequence>
</fo:root>