diff -ru writerfilter.orig/source/dmapper/DomainMapper.cxx writerfilter/source/dmapper/DomainMapper.cxx
--- writerfilter.orig/source/dmapper/DomainMapper.cxx	2010-05-07 08:42:15.000000000 +0100
+++ writerfilter/source/dmapper/DomainMapper.cxx	2010-05-07 08:55:34.000000000 +0100
@@ -4249,6 +4249,8 @@
 {
     //handle unprocessed deferred breaks
     PropertyMapPtr pParaProperties = m_pImpl->GetTopContextOfType(CONTEXT_PARAGRAPH);
+    if (!pParaProperties)
+        return;
     if( pParaProperties->hasEmptyPropertyValues() )
     {
         PropertyMap::const_iterator aIter = pParaProperties->find(PropertyDefinition( PROP_BREAK_TYPE , false ) );
diff -ru writerfilter.orig/source/dmapper/DomainMapper_Impl.cxx writerfilter/source/dmapper/DomainMapper_Impl.cxx
--- writerfilter.orig/source/dmapper/DomainMapper_Impl.cxx	2010-05-07 08:42:15.000000000 +0100
+++ writerfilter/source/dmapper/DomainMapper_Impl.cxx	2010-05-07 08:53:32.000000000 +0100
@@ -846,6 +846,8 @@
 #endif
 
     ParagraphPropertyMap* pParaContext = dynamic_cast< ParagraphPropertyMap* >( pPropertyMap.get() );
+    if (!pParaContext)
+        return;
     TextAppendContext& rAppendContext = m_aTextAppendStack.top();
     uno::Reference< text::XTextAppend >  xTextAppend = rAppendContext.xTextAppend;
     PropertyNameSupplier& rPropNameSupplier = PropertyNameSupplier::GetPropertyNameSupplier();
diff -ru writerfilter.orig/source/dmapper/DomainMapperTableManager.cxx writerfilter/source/dmapper/DomainMapperTableManager.cxx
--- writerfilter.orig/source/dmapper/DomainMapperTableManager.cxx	2010-05-07 08:42:15.000000000 +0100
+++ writerfilter/source/dmapper/DomainMapperTableManager.cxx	2010-05-07 08:57:17.000000000 +0100
@@ -321,6 +321,9 @@
 
 void DomainMapperTableManager::endLevel( )
 {
+    if (m_aTableGrid.empty() || m_aGridSpans.empty())
+        return;
+
     m_aTableGrid.pop_back( );
     m_aGridSpans.pop_back( );
     m_nTableWidth = 0;