NPE creating/editing a notification

Internal server error
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Version: 2.6-m3
Build: 1817
Build Date: 03 Mar 2010
system.error.request.information:
Request URL: https://bamboo.extranet.atlassian.com/build/admin/edit/configureBuildNotification.action
Scheme: https
Server: bamboo.extranet.atlassian.com
Port: 443
URI: /build/admin/edit/configureBuildNotification.action
Context Path:
Servlet Path: /build/admin/edit/configureBuildNotification.action
Path Info:
Query String:
Stack Trace:
java.lang.NullPointerException