Greetings all.

I apologise for posting this problem here, but I do so in desperation after receiving no response on the SugarCRM forums. Even if a reader is unfamiliar with ZuckerReports or SugarCRM some general advice on Java may be of use to me.

I have installed ZuckerReports v1.12 in SugarCRM 5.5.1. When I attempt to run a report I get the following error message.

cmdline: javaw -classpath "custom/ZuckerReports/resources/;custom/ZuckerReports/resources/contact_counts_by_first_name.jasper_files/;modules/ZuckerReports/jasper/ant-1.7.1.jar;modules/ZuckerReports/jasper/antlr-2.7.6.jar;modules/ZuckerReports/jasper/asm-attrs.jar;modules/ZuckerReports/jasper/asm.jar;modules/ZuckerReports/jasper/barbecue-1.5-beta1.jar;modules/ZuckerReports/jasper/barcode4j-2.0.jar;modules/ZuckerReports/jasper/batik-anim.jar;modules/ZuckerReports/jasper/batik-awt-util.jar;modules/ZuckerReports/jasper/batik-bridge.jar;modules/ZuckerReports/jasper/batik-css.jar;modules/ZuckerReports/jasper/batik-dom.jar;modules/ZuckerReports/jasper/batik-ext.jar;modules/ZuckerReports/jasper/batik-gvt.jar;modules/ZuckerReports/jasper/batik-parser.jar;modules/ZuckerReports/jasper/batik-script.jar;modules/ZuckerReports/jasper/batik-svg-dom.jar;modules/ZuckerReports/jasper/batik-svggen.jar;modules/ZuckerReports/jasper/batik-util.jar;modules/ZuckerReports/jasper/batik-xml.jar;modules/ZuckerReports/jasper/bcel-5.2.jar;modules/ZuckerReports/jasper/bsh-2.0b4.jar;modules/ZuckerReports/jasper/castor-1.2.jar;modules/ZuckerReports/jasper/cglib-2.1.jar;modules/ZuckerReports/jasper/cincom-jr-xmla.jar;modules/ZuckerReports/jasper/commons-beanutils-1.8.2.jar;modules/ZuckerReports/jasper/commons-collections-3.2.1.jar;modules/ZuckerReports/jasper/commons-dbcp-1.2.2.jar;modules/ZuckerReports/jasper/commons-digester-1.7.jar;modules/ZuckerReports/jasper/commons-javaflow-20060411.jar;modules/ZuckerReports/jasper/commons-logging-1.1.jar;modules/ZuckerReports/jasper/commons-math-1.0.jar;modules/ZuckerReports/jasper/commons-pool-1.3.jar;modules/ZuckerReports/jasper/commons-vfs-1.0.jar;modules/ZuckerReports/jasper/dom4j-1.6.jar;modules/ZuckerReports/jasper/ehcache-1.1.jar;modules/ZuckerReports/jasper/eigenbase-properties-1.1.0.10924.jar;modules/ZuckerReports/jasper/eigenbase-resgen-1.3.0.11873.jar;modules/ZuckerReports/jasper/eigenbase-xom-1.3.0.11999.jar;modules/ZuckerReports/jasper/ejb3-persistence.jar;modules/ZuckerReports/jasper/groovy-all-1.5.5.jar;modules/ZuckerReports/jasper/hibernate-annotations.jar;modules/ZuckerReports/jasper/hibernate-commons-annotations.jar;modules/ZuckerReports/jasper/hibernate3.jar;modules/ZuckerReports/jasper/hsqldb-1.8.0-10.jar;modules/ZuckerReports/jasper/iText-2.1.0.jar;modules/ZuckerReports/jasper/iTextAsian.jar;modules/ZuckerReports/jasper/jakarta-bcel-20050813.jar;modules/ZuckerReports/jasper/jasperreports-3.7.1.jar;modules/ZuckerReports/jasper/jasperreports-chart-themes-3.6.2.jar;modules/ZuckerReports/jasper/jasperreports-extensions-3.5.3.jar;modules/ZuckerReports/jasper/jasperreports-fonts-3.6.1.jar;modules/ZuckerReports/jasper/javacup.jar;modules/ZuckerReports/jasper/javassist-3.4.GA.jar;modules/ZuckerReports/jasper/jaxen-1.1.1.jar;modules/ZuckerReports/jasper/jcommon-1.0.15.jar;modules/ZuckerReports/jasper/jdt-compiler-3.1.1.jar;modules/ZuckerReports/jasper/jfreechart-1.0.12.jar;modules/ZuckerReports/jasper/jpa.jar;modules/ZuckerReports/jasper/js_activation-1.1.jar;modules/ZuckerReports/jasper/js_axis-1.4patched.jar;modules/ZuckerReports/jasper/js_commons-codec-1.3.jar;modules/ZuckerReports/jasper/js_commons-discovery-0.2.jar;modules/ZuckerReports/jasper/js_commons-httpclient-3.1.jar;modules/ZuckerReports/jasper/js_jasperserver-common-ws-3.5.0.jar;modules/ZuckerReports/jasper/js_jaxrpc.jar;modules/ZuckerReports/jasper/js_mail-1.4.jar;modules/ZuckerReports/jasper/js_saaj-api-1.3.jar;modules/ZuckerReports/jasper/js_wsdl4j-1.5.1.jar;modules/ZuckerReports/jasper/jta.jar;modules/ZuckerReports/jasper/jxl-2.6.jar;modules/ZuckerReports/jasper/log4j-1.2.15.jar;modules/ZuckerReports/jasper/mondrian-3.1.1.12687-Jaspersoft.jar;modules/ZuckerReports/jasper/mysql-connector-java-3.1.11-bin.jar;modules/ZuckerReports/jasper/olap4j-0.9.7.145.jar;modules/ZuckerReports/jasper/png-encoder-1.5.jar;modules/ZuckerReports/jasper/poi-3.2-FINAL-20081019.jar;modules/ZuckerReports/jasper/rex-20080421.jar;modules/ZuckerReports/jasper/rhino-1.7R1.jar;modules/ZuckerReports/jasper/saaj-api-1.3.jar;modules/ZuckerReports/jasper/slf4j-api.jar;modules/ZuckerReports/jasper/slf4j-log4j12.jar;modules/ZuckerReports/jasper/spring.jar;modules/ZuckerReports/jasper/sqleonardo-2007.03.jar;modules/ZuckerReports/jasper/swingx-2007_10_07.jar;modules/ZuckerReports/jasper/xml-apis-ext.jar;modules/ZuckerReports/jasper/xml-apis.jar;modules/ZuckerReports/jasper/zuckerreports-1.0.jar" at.go_mobile.zuckerreports.JasperBatchMain custom/ZuckerReports/temp/aff882c1-684b-d2de-403e-4be367bc2f5f/cmd.properties 2>&1 JasperBatchMain :: loading jasper design custom/ZuckerReports/resources/contact_counts_by_first_name.jasper JasperBatchMain :: getParameterValue(REPORT_PARAMETERS_MAP, java.util.Map) => null JasperBatchMain :: getParameterValue(JASPER_REPORT, net.sf.jasperreports.engine.JasperReport) => null JasperBatchMain :: getParameterValue(REPORT_CONNECTION, java.sql.Connection) => null JasperBatchMain :: getParameterValue(REPORT_MAX_COUNT, java.lang.Integer) => null JasperBatchMain :: getParameterValue(REPORT_DATA_SOURCE, net.sf.jasperreports.engine.JRDataSource) => null JasperBatchMain :: getParameterValue(REPORT_SCRIPTLET, net.sf.jasperreports.engine.JRAbstractScriptlet) => null JasperBatchMain :: getParameterValue(REPORT_LOCALE, java.util.Locale) => null JasperBatchMain :: getParameterValue(REPORT_RESOURCE_BUNDLE, java.util.ResourceBundle) => null JasperBatchMain :: getParameterValue(REPORT_TIME_ZONE, java.util.TimeZone) => null JasperBatchMain :: getParameterValue(REPORT_FORMAT_FACTORY, net.sf.jasperreports.engine.util.FormatFactory) => null JasperBatchMain :: getParameterValue(REPORT_CLASS_LOADER, java.lang.ClassLoader) => null JasperBatchMain :: getParameterValue(REPORT_URL_HANDLER_FACTORY, java.net.URLStreamHandlerFactory) => null JasperBatchMain :: getParameterValue(REPORT_FILE_RESOLVER, net.sf.jasperreports.engine.util.FileResolver) => null JasperBatchMain :: getParameterValue(REPORT_VIRTUALIZER, net.sf.jasperreports.engine.JRVirtualizer) => null JasperBatchMain :: getParameterValue(IS_IGNORE_PAGINATION, java.lang.Boolean) => null JasperBatchMain :: getParameterValue(REPORT_TEMPLATES, java.util.Collection) => null log4j:WARN No appenders could be found for logger (net.sf.jasperreports.extensions.ExtensionsEnviron ment). log4j:WARN Please initialize the log4j system properly. Exception in thread "main" java.lang.IllegalArgumentException: Null 'key' argument. at org.jfree.data.DefaultKeyedValues.setValue(Default KeyedValues.java:229) at org.jfree.data.DefaultKeyedValues2D.setValue(Defau ltKeyedValues2D.java:337) at org.jfree.data.DefaultKeyedValues2D.addValue(Defau ltKeyedValues2D.java:303) at org.jfree.data.category.DefaultCategoryDataset.add Value(DefaultCategoryDataset.java:222) at net.sf.jasperreports.charts.fill.JRFillCategoryDat aset.customIncrement(JRFillCategoryDataset.java:14 3) at net.sf.jasperreports.engine.fill.JRFillElementData set.increment(JRFillElementDataset.java:175) at net.sf.jasperreports.engine.fill.JRCalculator.calc ulateVariables(JRCalculator.java:148) at net.sf.jasperreports.engine.fill.JRVerticalFiller. fillDetail(JRVerticalFiller.java:736) at net.sf.jasperreports.engine.fill.JRVerticalFiller. fillReportContent(JRVerticalFiller.java:272) at net.sf.jasperreports.engine.fill.JRVerticalFiller. fillReport(JRVerticalFiller.java:114) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill (JRBaseFiller.java:923) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill (JRBaseFiller.java:826) at net.sf.jasperreports.engine.fill.JRFiller.fillRepo rt(JRFiller.java:59) at at.go_mobile.zuckerreports.JasperBatchMain.main(Ja sperBatchMain.java:126)

The same report runs correctly in another SugarCRM installation on the same server. The installation in which the report runs correctly is of the same version, and has the same version of the ZuckerReports module.

The report previously ran correctly on both installations. I think that the only changes that have been made on the installation in which the report now does not work since the report was last successfully run are the additions of a few custom fields in the Contacts module. These changes should have nothing to do with ZuckerReports.

I have tried uninstalling and reinstalling the ZuckerReports module, but the problem remains.

A google search for the warnings given in the error message ie.
* log4j:WARN No appenders could be found for logger (net.sf.jasperreports.extensions.ExtensionsEnviron ment).
* log4j:WARN Please initialize the log4j system properly.
Returns a few links (not specific to ZuckerReports) with tips similar to the following:
* log4j.properties or log4j.xml needs to be on the classpath where log4j can find it.
I cannot find a file with either of those names anywhere on my server, and yet the report can be run successfully on one of my SugarCRM installations. So I figure log4j must be being configured another way.

Can anyone suggest a way to solve this problem?
Or explain how I might discover how log4j is configured in ZuckerReports?
Or explain how I might compare the working with the non-working installation in order to help find a solution?
(I have tried searching for files containing "log4j" in both installations and comparing but all I can find are .jar files (nothing I can read with a text editor), and the .jar files found in each installation appear to be the same.)