Cannot edit 'Environment' issue field on fresh install

Just turning up a fresh install.

The issue fields seem to be in some unhappy state.

When I try to edit the 'Environment' field to say something else in the description field, I get:

2004-02-20 23:32:18,157 ERROR [webwork.dispatcher.ServletDispatcher] Could not execute action
java.lang.IndexOutOfBoundsException: Index: 10, Size: 10
at java.util.ArrayList.RangeCheck(ArrayList.java:491)
at java.util.ArrayList.set(ArrayList.java:323)
at com.atlassian.jira.issue.fields.layout.field.EditableDefaultFieldLayoutImpl.setDescription(EditableDefaultFieldLayoutImpl.java:25)
at com.atlassian.jira.web.action.admin.issuefields.AbstractEditFieldLayoutItem.doExecute(AbstractEditFieldLayoutItem.java:40)
at webwork.action.ActionSupport.execute(ActionSupport.java:151)
at com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:49)
at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:131)
at com.atlassian.jira.web.dispatcher.JiraServletDispatcher.service(JiraServletDispatcher.java:185)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:336)
at com.evermind._ie.doFilter(.:59)
at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:129)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:61)
at com.atlassian.jira.web.filters.SitemeshExcludePathFilter.doFilter(SitemeshExcludePathFilter.java:36)
at com.evermind._ic.doFilter(.:16)
at com.atlassian.seraph.filter.SecurityFilter.doFilter(SecurityFilter.java:161)
at com.evermind._ic.doFilter(.:20)
at com.atlassian.seraph.filter.LoginFilter.doFilter(LoginFilter.java:181)
at com.evermind._ic.doFilter(.:20)
at com.atlassian.util.profiling.filters.ProfilingFilter.doFilter(ProfilingFilter.java:132)
at com.evermind._ic.doFilter(.:20)
at com.atlassian.jira.web.filters.ActionCleanupDelayFilter.doFilter(ActionCleanupDelayFilter.java:37)
at com.evermind._ic.doFilter(.:20)
at com.atlassian.johnson.filters.JohnsonFilter.doFilter(JohnsonFilter.java:96)
at com.evermind._ic.doFilter(.:20)
at com.atlassian.jira.web.filters.gzip.GzipFilter.doFilter(GzipFilter.java:60)
at com.evermind._ic.doFilter(.:20)
at com.atlassian.core.filters.AbstractEncodingFilter.doFilter(AbstractEncodingFilter.java:38)
at com.evermind._deb._lnc(.:376)

As an expirement, I tried to edit the 'assignto' field to be described as 'assignto'. What results, is I now have two 'Environment' entries, the first is the normal one, the second (new) one has 'assignto' as its description.