Stacktrace: "java.lang.ClassCastException: java.lang.String" when viewing custom fields

2006-10-05 11:51:57,980 INFO [atlassian.jira.upgrade.ConsistencyCheckImpl] Configured to use database: mysql
2006-10-05 11:51:58,375 INFO [atlassian.jira.upgrade.ConsistencyCheckImpl] 

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JIRA 3.6.4 build: 160 (Enterprise Edition) started. You can now access JIRA through your web browser.
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2006-10-05 11:51:58,519 WARN [service.services.export.ExportService] Backup directory /usr/local/JIRA/JIRA_DB/backups does not exist
[Filter: profiling] Using parameter [jira_profile]
[Filter: profiling] defaulting to off [autostart=false]
[Filter: profiling] Turning filter off [jira_profile=off]
2006-10-05 11:51:59,311 [webwork.dispatcher.ServletDispatcher] Unable to find 'webwork.multipart.saveDir' property setting. Defaulting to javax.servlet.context.tempdir
5/10/2006 11:51:59 org.apache.coyote.http11.Http11Protocol start
INFO: Starting Coyote HTTP/1.1 on http-8080
5/10/2006 11:51:59 org.apache.catalina.storeconfig.StoreLoader load
INFO: Find registry server-registry.xml at classpath resource
5/10/2006 11:51:59 org.apache.catalina.startup.Catalina start
INFO: Server startup in 22304 ms
2006-10-05 11:53:21,971 WARN [atlassian.seraph.auth.DefaultAuthenticator] User: test tried to login but they do not have USE permission or weren't found. Deleting cookie.
2006-10-05 11:56:02,306 ERROR [core.ofbiz.comparators.OFBizFieldComparator] Exception: java.lang.ClassCastException: java.lang.String
java.lang.ClassCastException: java.lang.String
    at com.atlassian.core.ofbiz.comparators.OFBizFieldComparator.compare(OFBizFieldComparator.java:30)
    at java.util.Arrays.mergeSort(Arrays.java:1284)
    at java.util.Arrays.sort(Arrays.java:1223)
    at java.util.Collections.sort(Collections.java:159)
    at com.atlassian.jira.issue.fields.CustomFieldImpl.getAssociatedIssueTypes(CustomFieldImpl.java:962)
    at com.atlassian.jira.issue.fields.CustomFieldImpl.isAllIssueTypes(CustomFieldImpl.java:993)
    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:585)
    at webwork.util.InjectionUtils$DefaultInjectionImpl.invoke(InjectionUtils.java:61)
    at webwork.util.InjectionUtils.invoke(InjectionUtils.java:52)
    at webwork.util.ValueStack.findValue(ValueStack.java:346)
    at webwork.util.SimpleTest.test(SimpleTest.java:391)
    at webwork.util.ValueStack.test(ValueStack.java:129)
    at webwork.view.taglib.IfTag.doStartTag(IfTag.java:38)
    at org.apache.jsp.secure.admin.views.customfields.contexts_jsp._jspService(org.apache.jsp.secure.admin.views.customfields.contexts_jsp:103)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
    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 org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
    at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:574)
    at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:499)
    at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
    at org.apache.jsp.secure.admin.views.customfields.customfields_jsp._jspService(org.apache.jsp.secure.admin.views.customfields.customfields_jsp:267)