Make sure you add a User Data Tag called ‘stereo’ in Pano2VR in at least one panorama.
Best practice is to add this tag to the first panorama.

Or you can add it manually in the output xml file, it only has to be added to one panorama’s userdata:
<userdata author=”” source=”” latitude=”” info=”” title=”” description=”” longitude=”” comment=”” customnodeid=”” tags=”stereo” copyright=”” datetime=””/>

If there are already other tags present, make sure to add a ‘pipe’ character before ‘stereo’:
<userdata author=”” source=”” latitude=”” info=”” title=”” description=”” longitude=”” comment=”” customnodeid=”” tags=”livingroom|stereo” copyright=”” datetime=””/>