Rebl Issue

[Eduardo Cunha de Almeida]

Hello all,

I got this after installing bud 0.9.7:

$ rebl
/Library/Ruby/Gems/1.8/gems/bud-0.9.7/lib/bud/collections.rb:894:in `initialize': uninitialized constant MessagePack::Packer (NameError)
    from /Library/Ruby/Gems/1.8/gems/bud-0.9.7/lib/bud/state.rb:117:in `new'
    from /Library/Ruby/Gems/1.8/gems/bud-0.9.7/lib/bud/state.rb:117:in `channel'
    from /Library/Ruby/Gems/1.8/gems/bud-0.9.7/lib/bud/state.rb:127:in `loopback'
    from /Library/Ruby/Gems/1.8/gems/bud-0.9.7/lib/bud.rb:1195:in `builtin_state'
    from /Library/Ruby/Gems/1.8/gems/bud-0.9.7/lib/bud.rb:157:in `initialize'
    from /Library/Ruby/Gems/1.8/gems/bud-0.9.7/lib/bud/rebl.rb:328:in `new'
    from /Library/Ruby/Gems/1.8/gems/bud-0.9.7/lib/bud/rebl.rb:328:in `reinstantiate'
    from /Library/Ruby/Gems/1.8/gems/bud-0.9.7/lib/bud/rebl.rb:225:in `initialize'
    from /Library/Ruby/Gems/1.8/gems/bud-0.9.7/lib/bud/rebl.rb:81:in `new'
    from /Library/Ruby/Gems/1.8/gems/bud-0.9.7/lib/bud/rebl.rb:81:in `setup'
    from /Library/Ruby/Gems/1.8/gems/bud-0.9.7/lib/bud/rebl.rb:63:in `run'
    from /Library/Ruby/Gems/1.8/gems/bud-0.9.7/bin/rebl:5
    from /usr/bin/rebl:19:in `load'
    from /usr/bin/rebl:19


Does anyone know how to solve it?

Some info:
- MacOSX Lion
- ruby 1.8.7 (2012-02-08 patchlevel 358) [universal-darwin11.0]

best,
Edu