Errors containing invalid UTF8 appear to break getexceptional (i.e. they don't appear in the interface)

exceptional.log

# Logfile created on Mon Feb 14 18:10:33 +0000 2011 by logger.rb/22285
[INFO] (remote.rb:39:in `call_remote') Mon Feb 14 18:10:33 UTC 2011 - /api/errors?api_key=YOUR-API-KEY&protocol_version=5 - OK

Gemfile

source :rubygems

gem 'exceptional'
gem 'json'

getexception-utf8-test.rb

require 'rubygems'
require 'bundler/setup'

require 'exceptional'

Exceptional.configure('YOUR-API-KEY')

exception = StandardError.new("This string has bad UTF8 #{[0b1101_1111, 0b1101_1111].pack('C*')}")
data = Exceptional::ExceptionData.new(exception, 'name')
Exceptional::Remote.error(data)