Where is BytecodeGenerator?

Hi list,

What image/VM I should use to get WriteBarrier working (methods contains
references to non-existent BytecodeGenerator class)? Documentation says
that it should be Squeak 3.7 which means VM v. 3.7 or image v. 3.7?
Currently, I use VM ver.3.7
(http://ftp.squeak.org/current_stable/win/Squeak-Win32-3.7.1-VM.zip)
and developement image (http://damien.cassou.free.fr/squeak-dev)


Damian