Stand Alone Version
For the stand alone version to work correctly, make sure that you have the ability to read, write, modify, and delete files from the root of your hard drive.
LAN (Local Area Network) Version
The server installation will create a "ReadingHorizons" or "IntensivePhonics" folder on the server in the location that you specify. Inside this folder, there is a "Data" folder. For the program to operate correctly, anyone using it will need FULL control of the "Data" folder and all of its contents; that is, full read, write, modify, and delete permissions. The rest of the contents of the "ReadingHorizons" or "IntensivePhonics" folders will at least need read-only permission.