Hello, I am using iReport-1.2.7 I am getting this error when i try to launch a report and dont exists data to display returned by the query. ErrorÂfillingÂprint... java.lang.IllegalArgumentException:ÂNullÂ'key'Âargument. ÂÂÂÂatÂorg.jfree.data.DefaultKeyedValues.setValue(DefaultKeyedValues.java:225) ÂÂÂÂatÂorg.jfree.data.DefaultKeyedValues2D.setValue(DefaultKeyedValues2D.java:291) ÂÂÂÂatÂorg.jfree.data.DefaultKeyedValues2D.addValue(DefaultKeyedValues2D.java:260) I modify [Report properties] in order to set When no Data: No pages, BlankPage, AllSectionsNoDetail but it seems dont have effect because i am getting the error again. Any help is greatly appreciated.