Mechanize Iconv :: IllegalSequence when trying to generate a POST request

Question

The following code causes the above error, how can I fix it?

require 'mechanize'
m = WWW::Mechanize.new
p = m.get('http://art-mobile.com.ua/register.php')
f = p.forms.first
f.submit(f.buttons.last)

Just in case, here is a full description of the error in my inbox

D:/ruby/lib/ruby/gems/1.9.1/gems/mechanize-0.9.3/lib/www/mechanize/util.rb:40:in `iconv': "Ðåãèñòðàöèÿ"... (Iconv::IllegalSequence)
    from D:/ruby/lib/ruby/gems/1.9.1/gems/mechanize-0.9.3/lib/www/mechanize/util.rb:40:in `from_native_charset'
    from D:/ruby/lib/ruby/gems/1.9.1/gems/mechanize-0.9.3/lib/www/mechanize/form.rb:152:in `from_native_charset'
    from D:/ruby/lib/ruby/gems/1.9.1/gems/mechanize-0.9.3/lib/www/mechanize/form.rb:144:in `block in proc_query'
    from D:/ruby/lib/ruby/gems/1.9.1/gems/mechanize-0.9.3/lib/www/mechanize/form.rb:143:in `map'
    from D:/ruby/lib/ruby/gems/1.9.1/gems/mechanize-0.9.3/lib/www/mechanize/form.rb:143:in `proc_query'
    from D:/ruby/lib/ruby/gems/1.9.1/gems/mechanize-0.9.3/lib/www/mechanize/form.rb:198:in `block in build_query'
    from D:/ruby/lib/ruby/gems/1.9.1/gems/mechanize-0.9.3/lib/www/mechanize/form.rb:197:in `each'
    from D:/ruby/lib/ruby/gems/1.9.1/gems/mechanize-0.9.3/lib/www/mechanize/form.rb:197:in `build_query'
    from D:/ruby/lib/ruby/gems/1.9.1/gems/mechanize-0.9.3/lib/www/mechanize/form.rb:214:in `request_data'
    from D:/ruby/lib/ruby/gems/1.9.1/gems/mechanize-0.9.3/lib/www/mechanize.rb:401:in `post_form'
    from D:/ruby/lib/ruby/gems/1.9.1/gems/mechanize-0.9.3/lib/www/mechanize.rb:344:in `submit'
    from D:/ruby/lib/ruby/gems/1.9.1/gems/mechanize-0.9.3/lib/www/mechanize/form.rb:130:in `submit'
    from D:/doer.rb:8:in `<main>'

And BTW this solution does not work

Answer 1

It seems like the solution is to rewrite the stone a bit so that it converts the page encoding to utf-8 when initializing a new page, changing @encoding var to utf-8 and saving the original encoding in another file, and make the necessary changes to force the stone use the source encoding when generating the request