Not able to launch CMC

Hi

I have installed Crystal Enterprise XI and the installation was successful. But now am unable to launch the CMC. Its giving an error. Please find the error shown as below:

HTTP Status 404 - /businessobjects/enterprise115/adminlaunch/launchpad.html

-

type Status report

message /businessobjects/enterprise115/adminlaunch/launchpad.html

description The requested resource (/businessobjects/enterprise115/adminlaunch/launchpad.html) is not available.

Note: Web Service used is Tomcat 5.5

Would appreciate your immediate reponse on this please.

Regards

Cauvery