If the files are compressed then it will be a crz as well not a cr2. and PaganArtist said it was the scene (pz3) not the figure (cr2/z) that caused the problem. (Correction it was a prop so it's a ppz)(I confusing myself now)

I'm going to try an experiment with some compressed files later what was rthe name of the  product you were using I may have the same one.