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...Encoding::UndefinedConversionError: "\xA2" from ASCII-8BIT to UTF-8 with this (partial) stack trace: from /app/vendor/bundle/ruby/1.9.1/gems/mechanize-2.1/lib/mechanize/http/agent.rb:807:in `block in response_read'' from /usr/local/lib/ruby/1.9.1/net/protocol.rb:387:in `call_block'' from /usr/local/lib/ruby/1.9.1/net/protocol.rb:378:in `<<'' from /usr/local/lib/ruby/1.9.1/net/protocol.rb:88:in `read'' from /usr/local/lib/ruby/1.9.1/net/http.rb:2445:in `read_chunked'' from /usr/local/lib/ruby/1.9.1/net/http.rb:2419:in `read_body_0'...

I'm using caret to assess classifier performance (and it's great!). However, I've found that my results differ between R2.* and R3.* - reported accuracies are reduced dramatically. I suspect that a code change to kernlab ksvm may be responsible (see version 5.16-24 here: http://cran.r-project.org/web/packages/caret/news.html). I get very different results between caret_5.15-61 +