NullPointerException

Hi,

I installed the theme builder plugin on our site and I keep seeing the following exception in the catalina.out logs. Any idea what is causing this issue? Let me know if you need more information.

2008-10-03 23:59:58,128 ERROR [http-8888-Processor12] [atlassian.plugin.web.DefaultWebInterfaceManager] filterFragmentsByCondition Could not evaluate condition for descriptor: system.admin/adaptavist.builder.admin.web-section/adaptavist.builder.admin.choose-layout, with throwable: java.lang.NullPointerException

Thanks in advance.