2015-04-27 13:42:36,501 WARN  magnolia.jcr.node2bean.impl.Node2BeanProcessorImpl: can't resolve class for node /modules/form/config/validators/username
java.lang.ClassNotFoundException: info.magnolia.module.publicuserregistration.validators.UsernameValidator
	at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
	at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:648)
	at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:516)
	at info.magnolia.module.groovy.support.classes.GroovyClassFactory.forName(GroovyClassFactory.java:89)
	at info.magnolia.jcr.node2bean.impl.Node2BeanTransformerImpl.resolveType(Node2BeanTransformerImpl.java:147)
	at info.magnolia.jcr.node2bean.impl.Node2BeanProcessorImpl.toBean(Node2BeanProcessorImpl.java:117)
	at info.magnolia.jcr.node2bean.impl.Node2BeanProcessorImpl.toMap(Node2BeanProcessorImpl.java:227)
	at info.magnolia.jcr.node2bean.impl.Node2BeanProcessorImpl.toBean(Node2BeanProcessorImpl.java:132)
	at info.magnolia.jcr.node2bean.impl.Node2BeanProcessorImpl.toMap(Node2BeanProcessorImpl.java:227)
	at info.magnolia.jcr.node2bean.impl.Node2BeanProcessorImpl.setProperties(Node2BeanProcessorImpl.java:184)
	at info.magnolia.module.ModuleManagerImpl.populateModuleInstance(ModuleManagerImpl.java:460)
	at info.magnolia.module.ModuleManagerImpl.startModules(ModuleManagerImpl.java:341)
	at info.magnolia.module.ui.ModuleManagerWebUI$1.doExec(ModuleManagerWebUI.java:106)
	at info.magnolia.context.MgnlContext$VoidOp.exec(MgnlContext.java:421)
	at info.magnolia.context.MgnlContext$VoidOp.exec(MgnlContext.java:418)
	at info.magnolia.context.MgnlContext.doInSystemContext(MgnlContext.java:392)
	at info.magnolia.module.ui.ModuleManagerWebUI.execute(ModuleManagerWebUI.java:102)
	at info.magnolia.cms.filters.InstallFilter.doFilter(InstallFilter.java:100)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
	at info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
	at info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:65)
	at info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
	at info.magnolia.cms.filters.SafeDestroyMgnlFilterWrapper.doFilter(SafeDestroyMgnlFilterWrapper.java:107)
	at info.magnolia.cms.filters.MgnlFilterDispatcher.doDispatch(MgnlFilterDispatcher.java:67)
	at info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:108)
	at info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:94)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)