ruby-1.9.3-p194/lib/ruby/1.9.1/csv.rb:1855:in `sub!': invalid byte sequence in UTF-8 (ArgumentError)
I'm not sure how to debug this... 

ruby-1.9.3-p194/lib/ruby/1.9.1/csv.rb:1855:in `sub!': invalid byte sequence in UTF-8 (ArgumentError)

Any suggestions? Should I try to convert the file first?
ruby-1.9.3-p194/lib/ruby/1.9.1/csv.rb:1855:in `sub!': invalid byte sequence in UTF-8 (ArgumentError)
===

I'm not sure how to debug this... 

ruby-1.9.3-p194/lib/ruby/1.9.1/csv.rb:1855:in `sub!': invalid byte sequence in UTF-8 (ArgumentError)

Any suggestions? Should I try to convert the file first?