Emmanuel, that's good! Looks like I did something wrong, because SH3D didn't passed about 10 unit tests and didn't started UI because of error above until I reconfigured it to Java 1.5 VM

Anyway, now it works great!

For newbies like me: please make sure that your're using JRE5. I recieve exception above on JRE6 even with VM parameters from Readme.txt specified. With JRE5 everything works OK.