Migrating a report from iReport to JasperServer - parseError

I have a simple report with a Chart at the bottom. Works fine in iReport. But when I try to move it to the server and run it from there, I get the following error.  Any idea what is going on? The Datasource is defined correctly on the server and tested it.

com.jaspersoft.jasperserver.api.JSExceptionWrapper: org.xml.sax.SAXParseException: cvc-complex-type.2.4.a: Invalid content was found starting with element 'itemLabel'. One of '{"http://jasperreports.sourceforge.net/jasperreports":categoryAxisLabelExpression, "http://jasperreports.sourceforge.net/jasperreports":categoryAxisFormat, "http://jasperreports.sourceforge.net/jasperreports":valueAxisLabelExpression, "http://jasperreports.sourceforge.net/jasperreports":valueAxisFormat, "http://jasperreports.sourceforge.net/jasperreports":domainAxisMinValueExpression, "http://jasperreports.sourceforge.net/jasperreports":domainAxisMaxValueExpression, "http://jasperreports.sourceforge.net/jasperreports":rangeAxisMinValueExpression, "http://jasperreports.sourceforge.net/jasperreports":rangeAxisMaxValueExpression}' is expected.

com.jaspersoft.jasperserver.api.JSExceptionWrapper: net.sf.jasperreports.engine.JRException: org.xml.sax.SAXParseException: cvc-complex-type.2.4.a: Invalid content was found starting with element 'itemLabel'. One of '{"http://jasperreports.sourceforge.net/jasperreports":categoryAxisLabelExpression, "http://jasperreports.sourceforge.net/jasperreports":categoryAxisFormat, "http://jasperreports.sourceforge.net/jasperreports":valueAxisLabelExpression, "http://jasperreports.sourceforge.net/jasperreports":valueAxisFormat, "http://jasperreports.sourceforge.net/jasperreports":domainAxisMinValueExpression, "http://jasperreports.sourceforge.net/jasperreports":domainAxisMaxValueExpression, "http://jasperreports.sourceforge.net/jasperreports":rangeAxisMinValueExpression, "http://jasperreports.sourceforge.net/jasperreports":rangeAxisMaxValueExpression}' is expected.

        at net.sf.jasperreports.engine.xml.JRXmlLoader.loadXML(JRXmlLoader.java:243)

        at net.sf.jasperreports.engine.xml.JRXmlLoader.loadXML(JRXmlLoader.java:226)

        at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:214)

        at com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl.compileReport(EngineServiceImpl.java:891)

        at com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl.compileReport(EngineServiceImpl.java:1260)

        at com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.CacheableCompiledReports.getData(CacheableCompiledReports.java:58)

        at com.jaspersoft.jasperserver.api.metadata.common.service.impl.hibernate.HibernateRepositoryCache.saveData(HibernateRepositoryCache.java:180)

        at com.jaspersoft.jasperserver.api.metadata.common.service.impl.hibernate.HibernateRepositoryCache.getCachedItem(HibernateRepositoryCache.java:110)

        at com.jaspersoft.jasperserver.api.metadata.common.service.impl.hibernate.HibernateRepositoryCache.cache(HibernateRepositoryCache.java:70)

        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

        at java.lang.reflect.Method.invoke(Method.java:585)

        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:281)

        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:187)

        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:154)

        at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:107)

        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:176)

        at com.jaspersoft.jasperserver.api.common.util.spring.ReattemptMethodInterceptor.invoke(ReattemptMethodInterceptor.java:51)

        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:176)

        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:210)

        at $Proxy7.cache(Unknown Source)