You say it was a morph...that was saved as a cr2 file? That's not how morphs are usually "packaged" but I've seen it done. If this is the case, you probably need to get MorphManager (freestuff, I think) and load both cr2s in it and copy the morph from the morph cr2 over to the fairy wings cr2. Before you go to all that trouble, doublecheck the readme file (if there was one). It should have been explained in there.