* Added the option to update the local database file from the ECHAIM website. The user may choose to not update, update if a newer database is available, or to force an update. * Added an installation test script. The user can run this script after installing the model and test the output against a provided ‘expected output’ text file to ensure all pieces of the model is installed and working properly. * The AACGM components of the model have been updated to version 2.5. This includes the AACGM functions and the coefficients. Unnecessary files in the AACGM folders have been removed. * Fixed an issue where the root directory of the model code was not correct, leading to the model not running.