>> MerbAdmin::AbstractModel.all
RuntimeError: MerbAdmin could not find model ContentSlice::ContentPage
from /Users/jc/MerbSource/testapps/admintest/gems/gems/merb-admin-0.5.5/app/controllers/../../lib/abstract_model.rb:40:in `lookup'
from /Users/jc/MerbSource/testapps/admintest/gems/gems/merb-admin-0.5.5/app/controllers/../../lib/abstract_model.rb:25:in `all'
from /Users/jc/MerbSource/testapps/admintest/gems/gems/dm-core-0.10.0/lib/dm-core/model/descendant_set.rb:33:in `each'
from /Users/jc/MerbSource/testapps/admintest/gems/gems/dm-core-0.10.0/lib/dm-core/model/descendant_set.rb:33:in `each'
from /Users/jc/MerbSource/testapps/admintest/gems/gems/merb-admin-0.5.5/app/controllers/../../lib/abstract_model.rb:22: