Action

This happens because /opt/bin/jws is not /opt/SUNWjws/JWS/sparc-S2/bin/jws, which a script that runs another script: $_SS_JWS_HOME/solaris/bin/locate_dirs.

So whatever /opt/bin/jws is, it is not setting $_SS_JWS_HOME correctly. Take that out of your path and put /opt/SUNWjws/JWS/sparc-S2/bin/jws in your path so which jws returns: /opt/SUNWjws/JWS/sparc-S2/bin/jws.