I'm not the author of the Blender import script, but when you know that the 3D model of a piece of furniture is stored in its model attribute, it shouldn't be difficult to find the place in the script where the path of a model is used and adapt its urlencoded notation to the one required by Blender. Then don't forge to contribute your fix in the https://github.com/lcgamboa/sh3dtoblender project
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Emmanuel Puybaret, Sweet Home 3D creator
