How to get the game running properly:
After you start the game, right click on it and choose "Download .swf" This will download the game file to your computer. From there you can run it on a different flash emulator. I use Newgrounds Flash Player and it's worked perfectly so far, but your mileage may vary.
 "GemCraft chapter 0"){kind=icon}
 "Hunters and Props"){kind=icon}