I have the same problem, I think. I don't speak German but the link explain the problem. I've the same situation here:
http://www.lucca360.it/
http://www.lucca360.it/panoramiche/la…saciuccoli.html
Both the link above with 1.19 pr8
http://www.thinklab360.com/firenze-virtua…giovanni01.html
http://www.thinklab360.com/firenze-virtua…o/facciata.html
Both the link above with 1.19 pr4
All works good in safari and firefox - Mac Os 10.11.5
Thanks,
Leonardo
First post after years of use of KrPano