NPE when viewing the release notes.

java.lang.NullPointerException
        at com.atlassian.jira.project.version.DefaultVersionManager.getVersionsUnreleased(DefaultVersionManager.java:551)
        at com.atlassian.jira.web.action.browser.ReleaseNote.getVersions(ReleaseNote.java:47)
        at com.atlassian.jira.web.action.browser.ReleaseNote.doConfigure(ReleaseNote.java:149)
        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:597)
        at webwork.util.InjectionUtils$DefaultInjectionImpl.invoke(InjectionUtils.java:61)
        at webwork.util.InjectionUtils.invoke(InjectionUtils.java:52)
        at webwork.action.ActionSupport.invokeCommand(ActionSupport.java:417)
        at webwork.action.ActionSupport.execute(ActionSupport.java:146)
        at com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:58)
        at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:141)
        at com.atlassian.jira.web.dispatcher.JiraServletDispatcher.service(JiraServletDispatcher.java:181)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
        at com.atlassian.core.filters.HeaderSanitisingFilter.doFilter(HeaderSanitisingFilter.java:44)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
        at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)