Unable to load the 3D model

When trying to load a 3D model of a simple cube from Blender in the .obj format into a new project's krpano tour.xml file, the 3D model doesn't appear on the screen. I've tried numerous variations and examples, but I can't figure out why the model isn't displaying. Please help, as I don't know where else to look.

<include url="%VIEWER%/plugins/depthmap_navigation.xml" />
<scene name="scene_1" title="1" onstart="" havevrimage.mobilevr="false" havevrimage.no-mobilevr="true" thumburl="panos/1.tiles/thumb.jpg" lat="" lng="" alt="" heading="">    <view fovmin="20" fovmax="150" />    <display depthrange="5,100000" />
    <image>        <depthmap url="panos/mod.obj" backgroundurl="panos/2.jpg" subdiv="0" axis="-y+x+z" scale="1.0" origin="0,0,0" hittest="true" />    </image></scene>

<scene name="dollhouse" autoload="true" title="hello">    <image>        <depthmap backgroundurl="panos/2.jpg" url="panos/mod.obj" subdiv="0" rendermode="3dmodel" hittest="true" scale="125" textured="true" waitforload="true" center="0,0,0" axis="+x+y+z"/>    </image></scene>

Please give a simple example of the implementation of the model in .obj format

Thank you very much for your help, but for some reason I am unable to download from your website when I click on the "free trial" button.

Thank you very much. The problem was that the scale was set incorrectly, which caused nothing to load and the page to hang. Should the MTL file be automatically loaded or do I need to directly load it using texurl="panos/mod.mtl"? In my case, if the MTL is supposed to be loaded automatically, it didn't load, only the texture loaded. I'm wondering if the issue might be with the OBJ format provided by Blender or with specific material settings. What do you think?