Error while running Webdynpro Application

Hi,

I have configured the J2EE engine details correctly in my NWDS. Now i'm trying to run Webdynpro Applications. When I click on Run, it is asking SDM password.

I'm entering it. Then I'm getting an error like "Deployment Aborted".

The error details are

Deployment exception : Server <xxx> did not accept login request as admin on port 50118. Details: ERROR: Could not establish connection to server <xxx> at port 50118: <xxx>

Please suggest me what may be the error and how to resolve it...

Thanks in advance..

Regards,

Naresh