title: ArgumentError: invalid byte sequence in UTF-8
body: <p>I am new to rails, I am using rails 3.2.3 in windows7. I have a project in rails when i run bundle install it was successful. And the rails server also working good. When i give localhost:3000 it throws an error like this,</p>
  
  <pre><code> ERROR ArgumentError: invalid byte sequence in UTF-8
      c:/Ruby193/lib/ruby/gems/1.9.1/gems/win32console-1.3.2-x86-mingw32/lib/Win32/Console/ANSI.rb:163:in `sub!'
      c:/Ruby193/lib/ruby/gems/1.9.1/gems/win32console-1.3.2-x86-mingw32/lib/Win32/Console/ANSI.rb:163:in `_PrintString'
      c:/Ruby193/lib/ruby/gems/1.9.1/gems/win32console-1.3.2-x86-mingw32/lib/Win32/Console/ANSI.rb:146:in `block in write'
      c:/Ruby193/lib/ruby/gems/1.9.1/gems/win32console-1.3.2-x86-mingw32/lib/Win32/Console/ANSI.rb:146:in `each'
      c:/Ruby193/lib/ruby/gems/1.9.1/gems/win32console-1.3.2-x86-mingw32/lib/Win32/Console/ANSI.rb:146:in `write'
      c:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.8/lib/rails/rack/log_tailer.rb:29:in `print'
      c:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.8/lib/rails/rack/log_tailer.rb:29:in `tail!'
      c:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.8/lib/rails/rack/log_tailer.rb:18:in `call'
      c:/Ruby193/lib/ruby/gems/1.9.1/gems/rack-1.4.1/lib/rack/handler/webrick.rb:59:in `service'
      c:/Ruby193/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
      c:/Ruby193/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
      c:/Ruby193/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
  </code></pre>
  
  <p>i am unable to figure out where the exact problem. I searched in google but no relevent solution. Can anyone help me.</p>