All, If you're not working on the CVS Head, you can skip this. I've just committed a long anticipated change to the Bytecode Reader: deleting over 700 lines of backwards compatibility code. This will make future changes easier to implement in the reader. Backwards compatibility for bytecode versions 0 through 4 has been eliminated. This means that bytecode generated by LLVM Versions 1.3 and earlier are no longer supported. Bytecode version 5 (releases 1.4 through 1.8) and bytecode version 6 (release 1.9) will continue to be upgraded to the current bytecode version. Hopefully this won't affect too many people but I thought I should send a warning anyway. Reid.