about 3 years ago - CO_Avanya - Direct link
When using the editors it's best to disable any mods you don't absolutely need. If you don't need any, you can easily do that by using the -disableMods launch option.

Most mods were made for the simulation that happens in a city and that can cause issues in the editor. So best to not use them if you don't have to.

For figuring out how a mod like Building Variations works I recommend checking out the mod description. There's usually an explanation of how it works and how to use it. :)