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.