'Creating Display' fails for Create Assoc Rules process

Legacy User

Hi,

I'm doing some text association (4 txt files) where I am first running an FP-Growth process, and then a Create Association Rules process. Process works fine until it gets to creating the display for the association rules.  Below is the error:

Error executing background job 'Creating Display':java.lang.NullPointerException

Exception: java.lang.NullPointerException
Message: null
Stack trace:
  edu.uci.ics.jung.visualization.DefaultVisualizationModel.setGraphLayout(DefaultVisualizationModel.java:114)
  edu.uci.ics.jung.visualization.BasicVisualizationServer.setGraphLayout(BasicVisualizationServer.java:273)
  com.rapidminer.gui.graphs.GraphViewer.changeLayout(GraphViewer.java:601)
  com.rapidminer.gui.graphs.GraphViewer.render(GraphViewer.java:755)
  com.rapidminer.gui.processeditor.results.SingleResultOverview.<init>(SingleResultOverview.java:178)
  com.rapidminer.gui.processeditor.results.ProcessExecutionResultOverview.<init>(ProcessExecutionResultOverview.java:167)
  com.rapidminer.gui.processeditor.results.ResultOverview.addResults(ResultOverview.java:117)
  com.rapidminer.gui.processeditor.results.DockableResultDisplay$4.run(DockableResultDisplay.java:180)
  com.rapidminer.gui.tools.ProgressThread$2.run(ProgressThread.java:176)
  java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
  java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
  java.lang.Thread.run(Unknown Source)

Any ideas would be much appreciated.

Sal