When i open the cisco works I am getting this error."This installed software requires reusing a license provided in a previous version.
If a previous license is not available or proof of purchase validation was not performed,
you may continue to run the product in NAG mode, while arranging with your Cisco representative
to return this product and purchase a full licensed version." I have orginal license file in Cisco works server,but still giving the errormessage. please help me to solve this cisco works license issue.