To resolve, Redeploy the WAR file for the component that wasn’t working (CMC)

1)     Stopped tomcat (net stop “Apache Tomcat 5.5.20″)

2)     Renamed the CmcApp folder to CmcApp_old in D:\BusinessObjects\Tomcat55\webapps\

3)     Extracted the contents of the cmcapp.war file to a new folder D:\BusinessObjects\Tomcat55\webapps\CmcApp\

4)     Restarted tomcat.

Note: Get the CmcApp.war from your BOE Install Directory: e.g. C:\Program Files\Business Objects\BusinessObjects Enterprise 12.0\java\applications

If you are a windows user, you can extract the CmcApp.war using 7-Zip.