In Camtasia Recorder when you click on Tools > Options many of the buttons and options will look like they can be clicked but nothing happens when you click them.
This issue has been fixed in Camtasia 8.6.0 which can be downloaded here
This behavior is being caused by a specific Windows Security Update on Windows 8 and 8.1 touchscreen machines. Uninstalling the Windows Update can be used as a workaround to the issue.
To do so click on Control Panel > Programs and Features > Installed Updates.
Find KB3013455 in the list of installed updates and choose Uninstall.
**It has also been reported by one user that KB3034344 can also cause the same problem.