The crystal ball sits in the cockpit of the Mystery Flying Machine five minutes into the show, before they even meet Vincent Van Ghoul who hands it to Daphne.
How did a giant-sized airplane pass through the small doors of the temple?
In the shot before Daphne points to the temple to answer where the plane was dragged, Flim-Flam's skin is noticeably lighter. This also occurs when he introduces the gang to Vincent Van Ghoul, and when they all return to the temple.
Ursolvania is in the Himalayas, but its people appear to be Alpine, with titles such as Burgermeister.