I have successfully tested some 720 ° panoramas, but in this particular there is a defect in the photo "f" does not properly degraded. http://www.i-tour.es/720/krpano.swf
the problem seems to be the z/deep-ordering of the hotspots...
In the current xml code, the name of the cube/images will be used as zordering, but for some strange reason the faces were sorted in the wrong order...
As workaround, use a code where the zorder will be directly specified as number, e.g. here the changed actions - changed code in red: <action name="addface"> addhotspot(%1); set(hotspot[%1].url, %2); set(hotspot[%1].ath, %3); set(hotspot[%1].atv, %4); set(hotspot[%1].width, 1000); set(hotspot[%1].height, 1000); set(hotspot[%1].distorted, true); set(hotspot[%1].enabled, false); set(hotspot[%1].visible, true); set(hotspot[%1].alpha, 0.0); set(hotspot[%1].details, 16); set(hotspot[%1].zorder, %5); </action>