A Poser basic, Dasilva. Always turn off IK whenever you load a figure. It's so basic that most do it automatically without thinking about it. Unless you need IK for a posing or animation task, it causes nothing but problems.

http://www.sharecg.com/v/71535/browse/8/Script/Toggle-IK-Pack

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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