Crystal is right on that. You can apply .mc6 in the pose room. I think that behavior was introduced poser 8? Forget which version. I think there's still alot of Poser 6 users out there, for a vendor it's not really a consideration... for a freebie maker creating legacy style stuff, I like to include .pz2 and .mc6. I don't know about DS, all I know is I should learn how to use it and get a new computer.

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W10 Pro, HP Envy X360 Laptop, Intel Core i7-10510U, NVIDIA GeForce MX250, Intel UHD, 16 GB DDR4-2400 SDRAM, 1 TB PCIe NVMe M.2 SSD

Mudbox 2022, Adobe PS CC, Poser Pro 11.3, Blender 2.9, Wings3D 2.2.5

My Freestuff and Gallery at ShareCG