Yeah, there was talk about a Poser 4.5 in some earlier threads... by us people, that is. It would be P4 with P5's library management system and ALL the P4 bugs and glitches fixed, but no "advanced features" of P5 (read: the things that don't work consistently). But, the conclusion has been that CL will NOT be doing this type of coding. They (or their parent company) is fully committed to P5 for Windows and then for the Mac. There is no way they would go back and fix P4... especially when they consider P5 to be the "fix" for P4.