You should always check the tvaddons forum where the exodus developers reside.
They are currently reporting an error on exodus on new installs on Kodi 17.
"Had the same problem with a brand new install of Kodi today. You need to create a folder called plugin.video.exodus in the addon_data folder in your profile directory in File Manager. Exodus writes it's cache database there and if there's no folder it fails. Older versions of Kodi would automatically create the folder to keep a copy of the settings.xml file in but since Jarvis, Kodi only creates a settings.xml file when a default setting is changed meaning that unless you change a setting the folder won't get created.
Note to the developers for Exodus, need to put some code in to check that the folder is there on startup of the addon and create it if it isn't"