This problem has puzzled me for a long time.
At first,I thought it caused by the JDK version or the OS Windows7-64bit system,then I create a project in windows xp,the emulator crashed also.

1.Windows7 64 + JDK 1.6.0_35(i586) + SDK 2.0(emulator use Chinese language)
2.Windows xp 32 + JDK 1.6.0_13 + SDK 2.0(emulator use Chinese language)

1.Nokia IDE->Nokia Hub->Code example
2.Import the project rlinks,import the s40-with-themes.jar
3.Debug,then the emulator should crashed

I guess that the reason is that emulator's Chinese language pack has conflicts with the LWUIT library,because i create an simple project it works well.