The latest version PSoC Programmer / Clock Programmer should be 3.28 / 1.9.0.
Please make sure you have uninstalled all version of PSoC Programmer and Clock Programmer before starting the PSoC Creator installation.
For the PSoC Creator to be installed, please get it from webpage - http://www.cypress.com/products/psoc-creator-integrated-design-environment-ide
Whenever I try to install it, it keeps installing version 1.8, how do I instruct it to install 1.9?
The clock programmer should be installed along with the installation of psoc programmer.
The psoc programmer packaged in psoc creator installation package is 3.27, not updated the latest version(3.28) yet. Therefore, it's possible throw the error when you install the psoc creator, if you have already installed the newer version - v3.28 psoc programmer separately.
Please uninstall all version psoc programmer before psoc creator installation. If you are sure there is no any version psoc programmer is installed, please try out by restarting your PC.