Users that downloaded installations of E-Prime from the web (versus installing from CD) are able to save disk space by removing the installation images from their machine.
The installation image comes in two parts.
1) The compressed file from the web, which typically has a .exe extension.
2) Once the installation image downloaded, it is expanded to the C:\Program Files\PST\Install folder of the same name. Once the user uninstalls E-Prime, they can remove this folder to claim the unused space. The installation only uses these files during installation or repair option. If they are removed, they can simply be put back by expanding the installation image that was downloaded from the web.