We're running the latest Hudson 1.373 and trying to call /api/xml?depth=1. We get the following stack trace:

[Winstone 2010/08/25 11:57:08] - Untrapped Error in Servlet
javax.servlet.ServletException: org.kohsuke.stapler.export.NotExportableException: class hudson.util.DescribableList doesn't have @ExportedBean
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:569)
at org.kohsuke.stapler.MetaClass$5.doDispatch(MetaClass.java:181)
at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:534)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:450)
at org.kohsuke.stapler.Stapler.service(Stapler.java:132)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:45)
at winstone.ServletConfiguration.execute(ServletConfiguration.java:249)
at winstone.RequestDispatcher.forward(RequestDispatcher.java:335)
at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:378)
at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:94)
at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:86)
at winstone.FilterConfiguration.execute(FilterConfiguration.java:195)
at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368)
at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:47)
at winstone.FilterConfiguration.execute(FilterConfiguration.java:195)
at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368)
at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164)
at winstone.FilterConfiguration.execute(FilterConfiguration.java:195)
at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368)
at winstone.RequestDispatcher.forward(RequestDispatcher.java:333)
at winstone.RequestHandlerThread.processRequest(RequestHandlerThread.java:244)
at winstone.RequestHandlerThread.run(RequestHandlerThread.java:150)
at java.lang.Thread.run(Thread.java:636)
Caused by: org.kohsuke.stapler.export.NotExportableException: class hudson.util.DescribableList doesn't have @ExportedBean
at org.kohsuke.stapler.export.Model.<init>(Model.java:46)
at org.kohsuke.stapler.export.ModelBuilder.get(ModelBuilder.java:25)
at org.kohsuke.stapler.export.Property.writeValue(Property.java:181)
at org.kohsuke.stapler.export.Property.writeValue(Property.java:106)
at org.kohsuke.stapler.export.Property.writeTo(Property.java:83)
at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:156)
at org.kohsuke.stapler.export.Property.writeValue(Property.java:188)
at org.kohsuke.stapler.export.Property.writeValue(Property.java:151)
at org.kohsuke.stapler.export.Property.writeValue(Property.java:106)
at org.kohsuke.stapler.export.Property.writeTo(Property.java:83)
at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:156)
at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:153)
at org.kohsuke.stapler.export.Model.writeTo(Model.java:129)
at org.kohsuke.stapler.ResponseImpl.serveExposedBean(ResponseImpl.java:176)
at hudson.model.Api.doXml(Api.java:88)
at sun.reflect.GeneratedMethodAccessor73.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:259)
at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:126)
at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:65)
at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:79)
at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:534)
... 25 more