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Error

I have already tried to remove my old blender and download the latest version but it does not work.

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  • $\begingroup$ It seems that a shininess value on a material from the model you try to import is set to a negative value. This is the cause of the error apparently. So if you can't change that before importing, I don't think there is a solution, except changing the code in the addon. $\endgroup$
    – lemon
    Jul 11, 2019 at 8:48
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    $\begingroup$ Try to change the line 1354 in the indicated file (the last of the list in the error report) from "ma_wrap.roughness = 1.0 - (sqrt(fbx_shininess) / 10.0)" to "ma_wrap.roughness = 1.0 - (sqrt(fbx_shininess) / 10.0) if fbx_shininess > 0 else 1" (keep the spaces at the begining of the line and make a copy of the file before changing it). $\endgroup$
    – lemon
    Jul 11, 2019 at 8:54

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