title: Jasper Report export crashes
body: <p>I have a crosstab report that outputs 75 pages.
  When I do an export to Excel, after 2-3 mins, it crashes and says "An id is required to lookup a FlowDefinition".</p>
  
  <p>The output of the query contains less than 100,000 rows and the query itself takes 25 secs to execute. (from Naivcat)
  After this, jasper server takes some more time to fill the report.
  But exporting does not work.</p>
  
  <p>FYI - I have changed the Crosstab limit to 1000000 from the default 100000.</p>
  
  <pre><code>#limit the crosstab bucket/measure count to prevent out of memory errors
  net.sf.jasperreports.crosstab.bucket.measure.limit=10000000
  
  #suppress page and column footers and all but the first page and column headers when     exporting to XLS
  net.sf.jasperreports.export.xls.exclude.origin.keep.first.band.1=pageHeader
  net.sf.jasperreports.export.xls.exclude.origin.band.2=pageFooter
  net.sf.jasperreports.export.xls.exclude.origin.keep.first.band.3=columnHeader
  net.sf.jasperreports.export.xls.exclude.origin.band.4=columnFooter
  
  # report exporter hints override export parameters
  net.sf.jasperreports.export.parameters.override.report.hints=false
  </code></pre>
  
  <p>Thanks
  Ravi</p>