Accessing Windchill objects result in "Could not initialize class wt.org.LicenseGroupHelper" in Windchill PDMLink

• Accessing Windchill objects result in "Could not initialize class wt.org.LicenseGroupHelper"
• Error in MethodServer log

ERROR [SessionUserMonitor] wt.session.SessionUsers.ICache  - >> SessionUsersTimer: Ignoring throwable
java.lang.ExceptionInInitializerError
	at wt.org.LicenseGroupHelper.<clinit>(LicenseGroupHelper.java:99)
	at wt.licenseusage.StandardLicenseUsageService.getLicenseGroupsForUser(StandardLicenseUsageService.java:1509)
	at wt.licenseusage.StandardLicenseUsageService.recordLicenseUsageOnLogin(StandardLicenseUsageService.java:1329)
	at wt.licenseusage.StandardLicenseUsageService.recordLicenseUsageOnLogin(StandardLicenseUsageService.java:1225)
	at wt.licenseusage.StandardLicenseUsageService$2.notifyVetoableEvent(StandardLicenseUsageService.java:352)
	at wt.events.StandardKeyedEventBranch.intDispatchEvent(StandardKeyedEventBranch.java:320)
	at wt.events.StandardKeyedEventBranch.dispatchVetoableEvent(StandardKeyedEventBranch.java:255)
	at wt.events.StandardKeyedEventDispatcher.intDispatchEvent(StandardKeyedEventDispatcher.java:304)
	at wt.events.StandardKeyedEventDispatcher.dispatchVetoableEvent(StandardKeyedEventDispatcher.java:228)
	at wt.services.StandardManagerService.intDispatchVetoableEvent(StandardManagerService.java:410)
	at wt.services.StandardManagerService.dispatchVetoableEvent(StandardManagerService.java:303)
	at wt.session.SessionUsers.processUser(SessionUsers.java:1064)
	at wt.session.SessionUsers.access$700(SessionUsers.java:74)
	at wt.session.SessionUsers$SessionUsersTimer.run(SessionUsers.java:1120)
	at java.lang.Thread.run(Thread.java:748)
Caused by: (wt.org.licenseGroupResource/GROUP_HAS_UNEXPECTED_MEMBER_EXCEPTION) wt.util.WTException: The license group PTCAuthorLicense (wt.org.WTGroup:3378203908) contains an unexpected member.
	at wt.org.LicenseGroupHelper.findCorrespondingExternalGroup(LicenseGroupHelper.java:1137)
	at wt.org.LicenseGroupHelper.findGroup(LicenseGroupHelper.java:916)
	at wt.org.LicenseGroupHelper.findGroup(LicenseGroupHelper.java:858)
	at wt.org.LicenseGroupHelper.setupLicenseGroupCache(LicenseGroupHelper.java:135)
	at wt.org.LicenseGroupHelper.<clinit>(LicenseGroupHelper.java:97)
	... 14 more

• This causes the following error in the MethodServer log

ERROR [ajp-nio-127.0.0.1-8010-exec-1] com.ptc.mvc.controllers.ExceptionController szylakj - message : Could not initialize class wt.org.LicenseGroupHelper
error:-------------org.springframework.web.util.NestedServletException: Handler dispatch failed; nested exception is java.lang.NoClassDefFoundError: Could not initialize class wt.org.LicenseGroupHelper
org.springframework.web.util.NestedServletException: Handler dispatch failed; nested exception is java.lang.NoClassDefFoundError: Could not initialize class wt.org.LicenseGroupHelper
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1055)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:652)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at wt.licenseusage.licensing.LicenseFilter.doFilter(LicenseFilter.java:47)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at com.ptc.core.ui.validation.URLValidationFilter.doFilter(URLValidationFilter.java:85)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at wt.httpgw.filter.WTContextBeanFilter.doWithWtContextBeanHandler(WTContextBeanFilter.java:104)
	at wt.httpgw.filter.WTContextBeanFilter.doFilter(WTContextBeanFilter.java:58)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at wt.servlet.CompressionFilter.doFilter(CompressionFilter.java:301)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at wt.servlet.RequestInterrupter.doFilter(RequestInterrupter.java:335)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at wt.servlet.ServletRequestMonitor.doFilter(ServletRequestMonitor.java:1660)
	at wt.servlet.ServletRequestMonitorFilter.doFilter(ServletRequestMonitorFilter.java:56)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:544)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:364)
	at org.apache.coyote.ajp.AjpProcessor.service(AjpProcessor.java:526)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:831)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1639)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NoClassDefFoundError: Could not initialize class wt.org.LicenseGroupHelper
	at wt.licenseusage.StandardLicenseUsageService.getLicenseGroupsForUser(StandardLicenseUsageService.java:1509)
	at wt.licenseusage.StandardLicenseUsageService.recordLicenseUsage(StandardLicenseUsageService.java:1051)
	at wt.licenseusage.StandardLicenseUsageService.access$600(StandardLicenseUsageService.java:124)
	at wt.licenseusage.StandardLicenseUsageService$3.notifyVetoableMultiObjectEvent(StandardLicenseUsageService.java:372)
	at wt.events.StandardKeyedEventBranch.intDispatchEvent(StandardKeyedEventBranch.java:306)
	at wt.events.StandardKeyedEventBranch.dispatchVetoableEvent(StandardKeyedEventBranch.java:255)
	at wt.events.StandardKeyedEventDispatcher.intDispatchEvent(StandardKeyedEventDispatcher.java:304)
	at wt.events.StandardKeyedEventDispatcher.dispatchVetoableEvent(StandardKeyedEventDispatcher.java:228)
	at wt.services.StandardManagerService.intDispatchVetoableEvent(StandardManagerService.java:410)
	at wt.services.StandardManagerService.dispatchVetoableEvent(StandardManagerService.java:303)
	at wt.audit.StandardAuditService.dispatchViewPropertiesEvent(StandardAuditService.java:790)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at wt.services.ServiceFactory$ServerInvocationHandler.invoke(ServiceFactory.java:399)
	at com.sun.proxy.$Proxy30.dispatchViewPropertiesEvent(Unknown Source)
	at com.ptc.core.components.infoPage.InfoPageNavigatorDelegate.processRequest(InfoPageNavigatorDelegate.java:70)
	at com.ptc.jca.mvc.components.TypeBasedRedirectionInterceptor.preHandle(TypeBasedRedirectionInterceptor.java:230)
	at org.springframework.web.servlet.HandlerExecutionChain.applyPreHandle(HandlerExecutionChain.java:151)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1035)
	... 44 more