Unable to run Cucumber using IronRuby

I'm hoping someone knows the answer to this, I'm running Cucumber from IronRuby and getting an IKVM exception. Stack trace is at the bottom. RSpec works fine.

Any ideas?

can't convert Array into java::util::List (TypeError) C:/Program Files/IronRuby 1.0v4/lib/ironruby/gems/1.8/gems/gherkin-2.1.5-universal-dotnet/开发者_如何学Clib/gherkin/native/ikvm.rb:37:in `new'

C:/Program Files/IronRuby 1.0v4/lib/ironruby/gems/1.8/gems/cucumber-0.8.5/bin/../lib/cucumber/cli/configuration.rb:29:in `parse!'

C:/Program Files/IronRuby 1.0v4/lib/ironruby/gems/1.8/gems/cucumber-0.8.5/bin/../lib/cucumber/cli/main.rb:78:in `configuration'

C:/Program Files/IronRuby 1.0v4/lib/ironruby/gems/1.8/gems/cucumber-0.8.5/bin/../lib/cucumber/cli/main.rb:43:in `execute!'

C:/Program Files/IronRuby 1.0v4/lib/ironruby/gems/1.8/gems/cucumber-0.8.5/bin/../lib/cucumber/cli/main.rb:25:in `execute'

C:/Program Files/IronRuby 1.0v4/lib/ironruby/gems/1.8/gems/cucumber-0.8.5/bin/cucumber:8

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I saw your post in Github. Have you tried to use the newer version of Gherkin or downgrade to older dependency versions?