IS shuts down while running a service from Developer for Wm 6.1

Hello Webmethods Users Community…
I have a small query regarding webmethods Installation…i have installed wm 6.1…
When I try to run a service from Developer, the IS gets shuts down…am not getting ne error while creating a service but the IS gets shuts down while trying to run the service.
I am attaching the server log too…
Kindly let me know what is the issue.

Double-check that your license key is set properly. IS automatically shuts down after a short period of time is the license key is not valid.

What does your service do? Can you post that?