If im not wrong the select the .pack thing and just below right there is a thing. Add a new and select the assest name. Do the same for the engine one except instead of creating new, select the created one. Then build the pack. You should have it.
If im not wrong the select the .pack thing and just below right there is a thing. Add a new and select the assest name. Do the same for the engine one except instead of creating new, select the created one. Then build the pack. You should have it.