Game Crashes When Elf Returns to Gremlin's House.

I've been enjoying this game, but it crashes in the thrid or fourth scene - where the elf first returns to the Gremlin's house, just after the gnome gets launched in his granddad's rocket.

The crash occurs when the elf enters the Gremlin's house. You can pick up and manipulate objects outside, but when you enter the house, you get a brief view of the interior and then POOF!

I'm using the Steam version.

Some system specs:
Steam: v. 013
Linux Mint Olivia
Kernel: 3.8.0-29 generic x86_64
Processor: AMD A4-5300 APU with Radeon(tm) HD Graphics

Has anybody encountered this before?