I don't have ProPack. Since I don't make models, I have no reason to get it. Have had no trouble, except that stupid 'wrong version' error message. If I really want an rsr for a model that doesn't have one, I just save a pose. Then go into the library, delete the mypose.pz2, and move the mypose.rsr the library the model is in and rename it so it matches the cr2's name. Instant rsr, no worries. I've got too many fiddly little utility programs on my machine anyway