I need help....

I have downloaded alternate skins and injections for Victoria 4.

How do you change her skin. I don't want her wearing her default pink bra and panties. The costume that i want her to wear reveals her default clothes in the middle and on the sides.

Also whenever i choose injections and morphs it gives me an error message saying it cant find the body injections but I can see it with my own eyes I have it. 

If anyone can help with the I would really appreciate it.