sometimes get error :( on load jforum main page

[Migrated From Jforum.net]

This bug was fixed some days ago.

For now, check your group settings, are it was related to it.

Rafael
[originally posted on jforum.net by Rafael Steil]

[Migrated From Jforum.net]

<!-- BEGIN ERROR STACK TRACE

Method public boolean net.jforum.entities.UserSession.isAdmin() threw an exception when invoked on net.jforum.entities.UserSession@e3a61235
The problematic instruction:
----------
== if-else  [on line 130, column 57 in default/forum_list.htm]
----------

Java backtrace for programmers:
----------
freemarker.template.TemplateModelException: Method public boolean net.jforum.entities.UserSession.isAdmin() threw an exception when invoked on net.jforum.entities.UserSession@e3a61235
	at freemarker.ext.beans.SimpleMethodModel.exec(SimpleMethodModel.java:136)
	at freemarker.core.MethodCall._getAsTemplateModel(MethodCall.java:93)
	at freemarker.core.Expression.getAsTemplateModel(Expression.java:89)
	at freemarker.core.Expression.isTrue(Expression.java:138)
	at freemarker.core.IfBlock.accept(IfBlock.java:80)
	at freemarker.core.Environment.visit(Environment.java:196)
	at freemarker.core.MixedContent.accept(MixedContent.java:92)
	at freemarker.core.Environment.visit(Environment.java:196)
	at freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:160)
	at freemarker.core.Environment.visit(Environment.java:351)
	at freemarker.core.IteratorBlock.accept(IteratorBlock.java:95)
	at freemarker.core.Environment.visit(Environment.java:196)
	at freemarker.core.MixedContent.accept(MixedContent.java:92)
	at freemarker.core.Environment.visit(Environment.java:196)
	at freemarker.core.Environment.process(Environment.java:176)
	at freemarker.template.Template.process(Template.java:231)
	at net.jforum.JForum.processCommand(JForum.java:236)
	at net.jforum.JForum.service(JForum.java:203)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at net.jforum.util.legacy.clickstream.ClickstreamFilter.doFilter(ClickstreamFilter.java:59)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
	at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
	at java.lang.Thread.run(Thread.java:595)
Caused by: net.jforum.exceptions.SecurityLoadException: java.lang.ArrayIndexOutOfBoundsException: -1
	at net.jforum.repository.SecurityRepository.get(SecurityRepository.java:236)
	at net.jforum.repository.SecurityRepository.canAccess(SecurityRepository.java:206)
	at net.jforum.repository.SecurityRepository.canAccess(SecurityRepository.java:179)
	at net.jforum.entities.UserSession.isAdmin(UserSession.java:302)
	at sun.reflect.GeneratedMethodAccessor159.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	at freemarker.ext.beans.BeansWrapper.invokeMethod(BeansWrapper.java:583)
	at freemarker.ext.beans.SimpleMethodModel.exec(SimpleMethodModel.java:113)
	... 38 more
Caused by: java.lang.ArrayIndexOutOfBoundsException: -1
	at net.jforum.dao.generic.security.SecurityCommon.groupIdAsString(SecurityCommon.java:206)
	at net.jforum.repository.RolesRepository.getGroupRoles(RolesRepository.java:94)
	at net.jforum.dao.generic.security.GenericGroupSecurityDAO.loadRolesByUserGroups(GenericGroupSecurityDAO.java:213)
	at net.jforum.repository.SecurityRepository.load(SecurityRepository.java:151)
	at net.jforum.repository.SecurityRepository.load(SecurityRepository.java:94)
	at net.jforum.repository.SecurityRepository.load(SecurityRepository.java:112)
	at net.jforum.repository.SecurityRepository.get(SecurityRepository.java:233)
	... 46 more

END ERROR STACK TRACE-->

[originally posted on jforum.net by ins]