Ultimately, Candela produces three things:
- Meshes for referencing. These are placed in a folder in your project called “CnD_Mesh_Library” by default (you will have to make this folder unless you change the path value).
- Lightmaps. These are placed in a folder called “lightmaps” by default (you will have to make this folder unless you change the value).
- A data file that links the two - this usually goes in the “data” folder of your project by default.
Make sure that your maya project is set, and that you have a folder for each type of file created (They don't have to be the defaults, but the folders must exist).
Make sure that the mental ray for maya plugin is active (via the plugin manager). Candela will not work without it.