Class not found exception in MDM WBJ applicaiotn

Dear Experts,

I am facing one strange problem while creating a WDJ applicaiotn. I am trying to connect to MDM dataBase through a WDJ applicaiton. I am developing this appl by NWDS. This applicaiotn doesn't show any compilation error in NWDS when i use the mdm-common.jar file in java build path of NWDS. I've kept the same jar file in lib folder of this applicaiotn as well to be used while running this appl by j2ee engine but when i am trying to run this applicaiotn i am getting class not found exception ..the error message points to the location of the code which uses the class of this jar file.

Please help..am i missing anything.

Thanks and Regards,

M.D.Sahu