v0.1: Changed the value of "FILE_NOT_FOUND" to 3.14. v0.2: Changed the value of "FILE_NOT_FOUND" to -1. v0.9: Changed the value of "FILE_NOT_FOUND" to -666. v1.0: First release version v1.1: Removed the "error correction" mechanism as it wasn't working properly. *TODO: Write a utility that checks the source files to make sure that DoDiv sets isErr to the actual value that ProcessButtonClick expects in case of an error.