Exception during FogBugz import: Called a web action as if it were non-web

While running FogBugz import with thousands of cases, I have 24 instances of this error in our logs:

2007-07-26 08:58:40,531 Thread-31 INFO [imports.importer.impl.ImportLogger] Importing issue number 4 : Issue

{summary=Need to list the multiple roles on the list page, type=Improvement}

(42.985s)
2007-07-26 08:58:40,531 Thread-31 ERROR [action.admin.priorities.ViewPriorities] Called a web action as if it were non-web
java.lang.Exception: Called a web action as if it were non-web
at com.atlassian.jira.web.action.JiraWebActionSupport.getRedirect(JiraWebActionSupport.java:121)
at com.atlassian.jira.web.action.admin.priorities.ViewPriorities.redirectToView(ViewPriorities.java:78)
at com.atlassian.jira.web.action.admin.constants.AbstractViewConstants.doAddConstant(AbstractViewConstants.java:38)
at com.atlassian.jira.web.action.admin.priorities.ViewPriorities.doAddPriority(ViewPriorities.java:72)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
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:54)
at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:132)
at com.atlassian.core.action.DefaultActionDispatcher.execute(DefaultActionDispatcher.java:36)
at com.atlassian.jira.external.ExternalUtils.addConstant(ExternalUtils.java:743)
at com.atlassian.jira.external.ExternalUtils.addConstant(ExternalUtils.java:718)
at com.atlassian.jira.imports.importer.impl.DefaultJiraDataImporter.importIssues(DefaultJiraDataImporter.java:459)
at com.atlassian.jira.imports.importer.impl.DefaultJiraDataImporter.doImport(DefaultJiraDataImporter.java:120)
at com.atlassian.jira.imports.importer.impl.ImporterThread.run(ImporterThread.java:21)