Solved: When McAfee is installed on your pc, it is possible that you can't start the ClickShare . exe file.
This is only seen on Windows 7
McAfee solved the problem in their Host Intrusion . Please update your McAfee
More info on : https://kc.mcafee.com/corporate/index?page=content&id=KB79039
Version number of HIPS will be 220.127.116.1119 after updating Patch 4