Exception when starting Adapter_config utility

I am not able to start the config utility. The exception is ClassNotFound exception : COM/activesw/ite/plaf/ActiveLookAndFeel
while trying to start the adapter_config utility.
I have checked the jar files in the lib directory of webmethods but there is no jar file which contains the ActiveLookAndFeel.class under COM/activesw/ite/plaf directory.
Has anyone encounetered this problem before and how did you resolve it. I dont know if there is a compatibility problem or something else.

Alok Bedi.
GE Capital ITS