win32: server 500 internal error while accessing /captchas/xxxxxxxxx.gif

[Zloy]

That error caused by NoMethodError exception thrown on method String#bytesize called for image_data. It could be replaced with String#size. Now image generation works!

ruby 1.8.6 (2007-09-24 patchlevel 111) [i386-mswin32]
rails 2.3.2