Hi guys,
Received attachment from QT support. Copy pasted the file as suggested by support & carried out webupdate.
Pasting their message as follows "NSE India has made some changes to their site. The updated configuration file is attached. Save it to the QT directory, overwriting the old file. Alternately, this will come out in the WebUpdate at the end of this week."
However problem of refreshing data still remains. Hope they will sort out this issue soon.
Cheers