Symptoms
If you go to Control Panel -> Programs, select Tick Data Suite and click the Uninstall button, nothing happens.
Cause
This is generally caused by overzealous optimization software (such as CCleaner or Norton) which deletes some files required for uninstalling or modifying the Tick Data Suite installation.
Resolution
This problem is in fact the one described in the solution Cannot update: The older version of Tick Data Suite cannot be removed - please follow the instructions provided there to remove the Tick Data Suite.