The new Help Search feature, introduced in Tecplot RS version 2012 R2, does not work in Internet Explorer version 8 or earlier. The new Help Search does work in Internet Explorer version 9.
All other Help features, in Internet Explorer versions before version 9, work fine. All other Help features also work fine in most other modern browsers (e.g., Firefox, Opera, Safari). The sole exception is Google Chrome, which has security policies that prevent the scripts from working properly.