One thing not mentioned is if you have imported any mesh OBJ files (and probably sky HDR files, though I cannot confirm this as I've not tried to share skies). These are not saved in the save**.json file, just references to them, so you will also need to distribute the .obj file, texture files (.jpg or .png etc) and .mtl files with the FlowScape file too. The directory tree to the OBJ files needs to be duplicated too, otherwise FlowScape won't be able to import the mesh object.