Hi Benji33,
thank you, I did that modification and tour still works as expected in the browser.
After that I checked with the Samsung Gear VR, but I could not see the Enter VR button.
so I had to include some additional code the tour.xml file,
and copy the webvr.js and the png file
<!-- webvr.xml - WebVR plugin, enter/exit VR buttons, VR cursor, VR setup -->
<include url="%FIRSTXML%/webvr.xml" />
now I can see the VR Button, and can use the Gear VR but still all the hotspots are missing and I can't navigate with the Gear VR...
To be more specific, this is the tour I wanted to migrate with the goal to be able to view it with the Samsung Gear VR
http://www.luftpano.de/fotogipfel-oberstdorf/