Not shown workflow detail

In a clean installation alfresco share workflow-detail panel does not appear.
In tomcat log appears:
2012-10-15 12:48:52,953 ERROR [alfresco.web.site] [http-apr-8080-exec-4] javax.servlet.ServletException: Could not resolve view with name '_d41d8cd98f0b24e980998ecf8427e' in servlet with name 'Spring Surf Dispatcher Servlet'.
My steps are:
1) install alfresco community 4.2.a
2) Login admin
3) In My Tasks Dashlet execute "Start workflow"
4) Select "Adhoc workflow"
5) Fill fields
6) Start workflow
7) In "Workflows I've started" select our workflow and select menu "View workflow"
8) Workflow panel is empty
9) In tomcat log:
2012-10-15 12:48:52,953 ERROR [alfresco.web.site] [http-apr-8080-exec-4] javax.servlet.ServletException: Could not resolve view with name '_d41d8cd98f0b24e980998ecf8427e' in servlet with name 'Spring Surf Dispatcher Servlet'.