From: "Jason O." Date: 2010-11-11T03:40:09+09:00 Subject: Re: invalid byte sequence in US-ASCII (ArgumentError) The magic encoding comment didn't cut it for me. I found the answer in my case by adding the following to my environment.rb (I run a mixed 1.8 and 1.9 environment): if RUBY_VERSION =~ /1.9/ Encoding.default_external = Encoding::UTF_8 Encoding.default_internal = Encoding::UTF_8 end -- Posted via http://www.ruby-forum.com/.