Ore spawning

Status
Fixed
Issue description

I need help! I´m creating copper ore and i want it to generate in overworld about as much as iron and i don´t now exactly how to do that. I don´t understand: "Blocks this or can replace", "Frequency on chunks" and "Frequency on specific chunk". PLZ HELP ME!!! I have version 1.8.3 of MCreator

Issue comments

I have added a warning about this on the panel in UI itself to make this clear for new users in 1.8.4

We will change the workspace system in 1.8.4 so one will open them as folders so there won't be need for reimporting.