Sadly, the debugger has bitrotted a little bit. I tried the obvious fix which was to replace setlang with define_slang, but that just gets it up to the next error, which looks like the behavior of Perl6::Grammar has changed and Perl6::HookGrammar hasn't been updated to match or something.
I'll push the initial fix to git master today, though, hopefully someone will figure it out HTH - Timo
