I did a project involving multiple panoramas with the latest RC1:http://www.ateadata.co.nz/tect360
The problem is that it keeps crashing on Ipad when using safari. I didn't try on an Iphone, but I guess it should be the same issue.
I did try on a macbook with firefox and safari, and it works well.
The tour has been done under Win7 64bits.
I just did a check with Safari on our iPads, and your tour is not crashing.
When does the tour crash on your side? When loading a new panorama, opening the map, etc...?