I recently upgraded to the most recent version of Infernal Expansion, and wanted to check the new config settings. But, when i load up the game with the mod installed, the config file in my configs folder generates completely blank, with nothing in it.

This is supposed to happen, the config .minecraft/config/infernalexp-client.toml is for client-side configuration only. The server-side config is located in .minecraft/saves/<your world>/serverconfig/infernalexp-server.toml