get_type_metrics': UnableToReadFont '(null)'

Pokkai Dokkai wrote:

my os windows-xp
rails -1.2.3
i got this error with rmagick

./script/../config/../vendor/plugins/captcha_generator/lib/captcha_generator.rb:32:in
`get_type_metrics': UnableToReadFont `(null)' (Magick::ImageMagickError)

vendor/plugins/captcha_generator/lib/captcha_generator.rb:59:in `write':
RegistryKeyLookupFailed `CoderModulesPath' (Magick::ImageMagickError)

can anyn one help me