I have changed the domain of Yokogawa CS1000 system in 7 different sites in my plant. 6 out of 7 working ok, in one location there is a problem in report generation while operation and monitoring function working good. i am unable to communicate the tags in report and 'COMERR' persist every time. all tags under consideration are in closing processing and HIS has report package and EXAOPC package installed. i reinstalled the Software after cleaning registry and deleted CENTUM folder & user account before installation. domain changed to 4 from 1. Please suggest solution.