Can't install ZenTest 4.8.4

Question

When I try to install ZenTest:

gem install ZenTest

I get the following error:

Invalid gemspec in [C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/specifications/ZenTest-4.8.4.gemspec]: Illformed requirement ["< 2.1, >= 1.8"]

I tried cleaning up the gems and removing the ZenTest to no avail.

What's wrong?

Answer 1

I've just spoken with Ryan Davis, the author of ZenTest. He tells me that this is due to a bug in RubyGems and they're preparing a release that fixes it.

In the meantime, downgrade to 4.8.3.