Custom skirt issues with weighting

[AaronS]

I imported a custom mesh from skyrim for private use. I am having issues with the weight paint, if I take all the weight off the game crashes, if i leave it as is the mesh is skewed. I tried loading a reference. But all I get is an error of not the same shape and wrong number of vertices, when I try to transfer the weights. I am using outfit studio, I have nifskope installed, but when I load it in i have chunks missing from the skirt.

Any advice or helpful tips or videos.

Thanks in advance.