Call stack for unrecognized properties

RuntimeError: Unrecognized properties: type, serialized_name on {"type"=>"string", "serialized_name"=>"ExclusiveStartTableName"}
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/gems/aws-sdk-core-2.0.0.rc6/vendor/seahorse/lib/seahorse/model/node.rb:88:in `from_hash'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/gems/aws-sdk-core-2.0.0.rc6/vendor/seahorse/lib/seahorse/model/shapes/shape.rb:107:in `from_hash'
        kernel/common/enumerable.rb:293:in `inject'
        kernel/common/hash.rb:342:in `each'
        kernel/common/enumerable.rb:288:in `inject'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/gems/aws-sdk-core-2.0.0.rc6/vendor/seahorse/lib/seahorse/model/shapes/shape.rb:107:in `from_hash'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/gems/aws-sdk-core-2.0.0.rc6/vendor/seahorse/lib/seahorse/model/property.rb:122:in `deserialize'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/gems/aws-sdk-core-2.0.0.rc6/vendor/seahorse/lib/seahorse/model/property.rb:52:in `load_from'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/gems/aws-sdk-core-2.0.0.rc6/vendor/seahorse/lib/seahorse/model/node.rb:79:in `from_hash'
        kernel/common/hash.rb:342:in `each'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/gems/aws-sdk-core-2.0.0.rc6/vendor/seahorse/lib/seahorse/model/node.rb:75:in `from_hash'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/gems/aws-sdk-core-2.0.0.rc6/vendor/seahorse/lib/seahorse/model/property.rb:122:in `deserialize'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/gems/aws-sdk-core-2.0.0.rc6/vendor/seahorse/lib/seahorse/model/property.rb:52:in `load_from'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/gems/aws-sdk-core-2.0.0.rc6/vendor/seahorse/lib/seahorse/model/node.rb:79:in `from_hash'
        kernel/common/hash.rb:342:in `each'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/gems/aws-sdk-core-2.0.0.rc6/vendor/seahorse/lib/seahorse/model/node.rb:75:in `from_hash'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/gems/aws-sdk-core-2.0.0.rc6/vendor/seahorse/lib/seahorse/model/operations.rb:16:in `[]'
        kernel/common/mutex.rb:62:in `synchronize'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/gems/aws-sdk-core-2.0.0.rc6/vendor/seahorse/lib/seahorse/model/operations.rb:14:in `[]'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/gems/aws-sdk-core-2.0.0.rc6/vendor/seahorse/lib/seahorse/client/base.rb:51:in `operation'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/gems/aws-sdk-core-2.0.0.rc6/vendor/seahorse/lib/seahorse/client/base.rb:94:in `context_for'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/gems/aws-sdk-core-2.0.0.rc6/vendor/seahorse/lib/seahorse/client/base.rb:45:in `build_request'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/gems/aws-sdk-core-2.0.0.rc6/vendor/seahorse/lib/seahorse/client/plugins/operation_methods.rb:42:in `add_operation_helpers'
        test.rb:17:in `doit'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/bundler/gems/celluloid-def3baf4b83f/lib/celluloid/calls.rb:26:in `dispatch'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/bundler/gems/celluloid-def3baf4b83f/lib/celluloid/calls.rb:63:in `dispatch'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/bundler/gems/celluloid-def3baf4b83f/lib/celluloid/cell.rb:60:in `invoke'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/bundler/gems/celluloid-def3baf4b83f/lib/celluloid/cell.rb:71:in `task'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/bundler/gems/celluloid-def3baf4b83f/lib/celluloid/actor.rb:362:in `task'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/bundler/gems/celluloid-def3baf4b83f/lib/celluloid/tasks.rb:55:in `initialize'
        /home/myitcv/.rbenv/versions/rbx-2.2.5/gems/bundler/gems/celluloid-def3baf4b83f/lib/celluloid/tasks/task_fiber.rb:15:in `create'