Missing Portfolio menu on the top bar when installing JIRA Portfolio in JIRA 6.3.4a

2015-07-06 15:20:02,644 UpmAsynchronousTaskManager:thread-3 INFO admin 919x301x2 142ytn4 10.60.5.118 /rest/plugins/1.0/ [atlassian.plugin.manager.PluginEnabler] Waiting for ENABLING plugins: [com.radiantminds.roadmaps-jira]
2015-07-06 15:20:02,644 UpmAsynchronousTaskManager:thread-3 INFO admin 919x301x2 142ytn4 10.60.5.118 /rest/plugins/1.0/ [atlassian.plugin.util.WaitUntil] Plugins that have yet to be enabled: [com.radiantminds.roadmaps-jira], 60 seconds remaining
2015-07-06 15:20:03,644 UpmAsynchronousTaskManager:thread-3 INFO admin 919x301x2 142ytn4 10.60.5.118 /rest/plugins/1.0/ [atlassian.plugin.util.WaitUntil] Plugins that have yet to be enabled: [com.radiantminds.roadmaps-jira], 59 seconds remaining
2015-07-06 15:20:04,644 UpmAsynchronousTaskManager:thread-3 INFO admin 919x301x2 142ytn4 10.60.5.118 /rest/plugins/1.0/ [atlassian.plugin.manager.PluginEnabler] Plugin 'com.radiantminds.roadmaps-jira' is now ENABLED
2015-07-06 15:21:28,225 http-bio-8634-exec-16 WARN admin 921x368x1 142ytn4 10.60.5.118 /plugins/servlet/upm [plugins.jira.conditions.PluginAdminAccessCondition] For input string: "4a"
java.lang.NumberFormatException: For input string: "4a"
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
	at java.lang.Integer.parseInt(Integer.java:492)
	at java.lang.Integer.parseInt(Integer.java:527)
	at org.osgi.framework.Version.<init>(Version.java:133)
	at com.atlassian.jpo.apis.Version.<init>(Version.java:11)
	at com.atlassian.jpo.jira.api.JiraVersionAccessor.getVersion(JiraVersionAccessor.java:27)
	at com.atlassian.jpo.apis.VersionAwareSpringProxyInvocationHandler.invoke(VersionAwareSpringProxyInvocationHandler.java:30)
	at com.sun.proxy.$Proxy6484.getGroupsForUser(Unknown Source)
	at com.radiantminds.roadmap.jira.common.components.extension.users.JiraUserExtension.getActiveUserData(JiraUserExtension.java:75)
	at com.radiantminds.roadmap.common.permissions.PluginPermissions.check(PluginPermissions.java:52)
	at com.radiantminds.roadmap.common.permissions.PluginPermissions.check(PluginPermissions.java:73)
	at com.radiantminds.plugins.jira.conditions.PluginAdminAccessCondition.shouldDisplay(PluginAdminAccessCondition.java:32)
	at com.atlassian.plugin.web.DefaultWebInterfaceManager.filterFragmentsByCondition(DefaultWebInterfaceManager.java:153)
	at com.atlassian.plugin.web.DefaultWebInterfaceManager.getDisplayableItems(DefaultWebInterfaceManager.java:106)
	at com.atlassian.plugin.web.DefaultWebInterfaceManager.getDisplayableWebItems(DefaultWebInterfaceManager.java:214)
	at com.atlassian.jira.plugin.webfragment.DefaultSimpleLinkManager.getLinksForSection(DefaultSimpleLinkManager.java:131)
	at com.atlassian.jira.plugin.webfragment.DefaultSimpleLinkManager.getLinksForSection(DefaultSimpleLinkManager.java:124)
	at com.atlassian.jira.web.sitemesh.AdminDecoratorHelper.getLinksForSection(AdminDecoratorHelper.java:583)
	at com.atlassian.jira.web.sitemesh.AdminDecoratorHelper.getSectionContainsAtleastOneLink(AdminDecoratorHelper.java:601)
	at com.atlassian.jira.web.sitemesh.AdminDecoratorHelper.makeSideMenuSoyRenderData(AdminDecoratorHelper.java:369)
	at com.atlassian.jira.web.sitemesh.AdminDecoratorHelper.makeChildSectionsForSection(AdminDecoratorHelper.java:391)
	at com.atlassian.jira.web.sitemesh.AdminDecoratorHelper.makeSideMenuSoyRenderData(AdminDecoratorHelper.java:380)
	at com.atlassian.jira.web.sitemesh.AdminDecoratorHelper.makeChildSectionsForSection(AdminDecoratorHelper.java:391)
	at com.atlassian.jira.web.sitemesh.AdminDecoratorHelper.makeSideMenuSoyRenderData(AdminDecoratorHelper.java:380)
	at com.atlassian.jira.web.sitemesh.AdminDecoratorHelper.setCurrentTab(AdminDecoratorHelper.java:115)
	at org.apache.jsp.decorators.admin_jsp._jspService(admin_jsp.java:191)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)  <+36> (ApplicationFilterChain.java:303) (ApplicationFilterChain.java:208) (IteratingFilterChain.java:46)