Something STINKS here! WHY would Curious Labs create a whole new format that excludes the easy use of P3 and P4, and even P4.3 custom figures??? Why do WE have to find the work around... and why didn't Steve answer the primary question of WHY the format is different? I would much rather have my Poser figures (regular and custom) take up space on my hard drive, and WORK PROPERLY and easily, than to have a whole new poser that is not backwards compatible! Why are we being forced to give up our creative sharing of custom figures and all the things that make Poser WORTH it, to use?? As far as I am concerned, I will sure HANG ON to BOTH my good old P3 and my separatly installed P4!!!!!!!! I am not technical minded, and I can not go through all those crazy things to try and get my "old" custom figures to work in this shoddy buggy Pro Pack!