This function was automatically disabled in code starting theme version 3.7. Help to update the theme – http://help.wpresidence.net/article/how-to-update-the-theme/
There is a function that protects the core plugin and de-activates automatically so that there are no errors from using the plugin with other themes.
The code can be removed via FTP in plugins/wpresidence-core/wpresidence-core.php
Delete the entire “if” function or just the lines with deactivate and wp_die