DS2 3D Legs Models doesn't open

[Mezgal-b]

I've trying to see some models with the model editor, but the models corresponding to the legs doesn't seems to open.

I go like this: Model Editor -> Parts -> any file that starts with "lg_" lg_1500_m, for example. Appears the loading box, but the Model in the 3D model view doesnt change.

The game is Dark Souls II Scholar of the First Sin in Steam and the DSMapStudio version is 1.09.1 Hotfix 2