Ruby 1.9 and Sass encoding issues. (from ASCII-8BIT to UTF-8) -

i upgraded ruby 1.9 , can no longer compile sass.

i've seen solutions state if place

 @charset "utf-8"; 

at top of .sccs file, fix it. i'm still getting error. here's full traceback

i've tried removing non-ascii characters css file, creating new one, etc. won't compile. tips?

traceback:

sass watching changes. press ctrl-c stop.

/home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/util.rb:496:in `encode': transcoding not supported (from ascii-8bit utf-8) (argumenterror)

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/util.rb:496:in _enc' /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/util.rb:515:inrescue in block (1 levels) in '

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/util.rb:508:in `block (1 levels) in '

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/util.rb:472:in `yield'

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/util.rb:472:in `default'

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/util.rb:472:in `block in check_sass_encoding'

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/util.rb:471:in `each'

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/util.rb:471:in `find'

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/util.rb:471:in `check_sass_encoding'

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/engine.rb:349:in `check_encoding!'

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/engine.rb:316:in `_to_tree'

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/engine.rb:291:in `_render'

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/engine.rb:238:in `render'

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/plugin/compiler.rb:319:in `update_stylesheet'

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/plugin/compiler.rb:169:in `block in update_stylesheets'

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/plugin/compiler.rb:167:in `each'

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/plugin/compiler.rb:167:in `update_stylesheets'

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/plugin/compiler.rb:214:in `watch'

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/plugin.rb:111:in `method_missing'

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/exec.rb:408:in `watch_or_update'

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/exec.rb:294:in `process_result'

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/exec.rb:41:in `parse'

from /home/webdev/.gem/repository/gems/sass-3.1.1/lib/sass/exec.rb:21:in `parse!'

from /home/webdev/.gem/repository/gems/sass-3.1.1/bin/sass:8:in `'

from /home/webdev/.gem/repository/bin/sass:19:in `load'

from /home/webdev/.gem/repository/bin/sass:19:in `'

to complete @nex3 answer can

open config.rb file , add:

encoding.default_external = "utf-8"