Thanks! The Pano2VR player doesn't have a version number I can find, it's 69994 bytes in size, and has a file date of Oct 21, 2014.
I don't think the viewer's computer has a serious issue, some of my panoramas work without the problem, some don't.
Panoramic examples from other websites (built with other software) work without a problem.
Is there a new version of pano2vr_player.js that i could try?
All legal copies of software Pano2VR generate commented header. Hopki says - in all your JS files header is removed, for whatever any reason...
New player is always available on the website of the developer. The last update in March 2015.
BTW
You have not listened to my advice to
use a strictly discrete values of the tiles,well... very vain.. this eliminate such render errors.