Error during proxy scan

Created by: tbif

My scan is dying with the errors listed below. I'm running the latest nightly build as follows:

./arachni --plugin=proxy:bind_address=127.0.0.1 https://myurl:6789

[2012-07-29 16:16:33 -0600] HTTP: Could not get cookies for URL 'https://myurl:6789/' from Cookiejar (undefined method start_with?' for nil:NilClass). [2012-07-29 16:16:33 -0600] HTTP: /home/tom/tools/arachni-0.4.1dev/gems/gems/arachni-0.4.1dev/lib/arachni/http/cookie_jar.rb:150:inin_domain?' [2012-07-29 16:16:33 -0600] HTTP: /home/tom/tools/arachni-0.4.1dev/gems/gems/arachni-0.4.1dev/lib/arachni/http/cookie_jar.rb:100:in block in for_url' [2012-07-29 16:16:33 -0600] HTTP: /home/tom/tools/arachni-0.4.1dev/gems/gems/arachni-0.4.1dev/lib/arachni/http/cookie_jar.rb:99:ineach' [2012-07-29 16:16:33 -0600] HTTP: /home/tom/tools/arachni-0.4.1dev/gems/gems/arachni-0.4.1dev/lib/arachni/http/cookie_jar.rb:99:in map' [2012-07-29 16:16:33 -0600] HTTP: /home/tom/tools/arachni-0.4.1dev/gems/gems/arachni-0.4.1dev/lib/arachni/http/cookie_jar.rb:99:infor_url' [2012-07-29 16:16:33 -0600] HTTP: /home/tom/tools/arachni-0.4.1dev/gems/gems/arachni-0.4.1dev/lib/arachni/http.rb:290:in block in request' [2012-07-29 16:16:33 -0600] HTTP: /home/tom/tools/arachni-0.4.1dev/gems/gems/arachni-0.4.1dev/lib/arachni/utilities.rb:266:incall' [2012-07-29 16:16:33 -0600] HTTP: /home/tom/tools/arachni-0.4.1dev/gems/gems/arachni-0.4.1dev/lib/arachni/utilities.rb:266:in exception_jail' [2012-07-29 16:16:33 -0600] HTTP: /home/tom/tools/arachni-0.4.1dev/gems/gems/arachni-0.4.1dev/lib/arachni/http.rb:286:inrequest' [2012-07-29 16:16:33 -0600] HTTP: /home/tom/tools/arachni-0.4.1dev/gems/gems/arachni-0.4.1dev/lib/arachni/http.rb:369:in get' [2012-07-29 16:16:33 -0600] HTTP: /home/tom/tools/arachni-0.4.1dev/gems/gems/arachni-0.4.1dev/lib/arachni/http.rb:567:inmethod_missing' [2012-07-29 16:16:33 -0600] HTTP: /home/tom/tools/arachni-0.4.1dev/gems/gems/arachni-0.4.1dev/lib/arachni/spider.rb:339:in visit' [2012-07-29 16:16:33 -0600] HTTP: /home/tom/tools/arachni-0.4.1dev/gems/gems/arachni-0.4.1dev/lib/arachni/spider.rb:107:inrun' [2012-07-29 16:16:33 -0600] HTTP: /home/tom/tools/arachni-0.4.1dev/gems/gems/arachni-0.4.1dev/lib/arachni/framework.rb:726:in audit' [2012-07-29 16:16:33 -0600] HTTP: /home/tom/tools/arachni-0.4.1dev/gems/gems/arachni-0.4.1dev/lib/arachni/framework.rb:209:inblock in run' [2012-07-29 16:16:33 -0600] HTTP: /home/tom/tools/arachni-0.4.1dev/gems/gems/arachni-0.4.1dev/lib/arachni/utilities.rb:266:in call' [2012-07-29 16:16:33 -0600] HTTP: /home/tom/tools/arachni-0.4.1dev/gems/gems/arachni-0.4.1dev/lib/arachni/utilities.rb:266:inexception_jail' [2012-07-29 16:16:33 -0600] HTTP: /home/tom/tools/arachni-0.4.1dev/gems/gems/arachni-0.4.1dev/lib/arachni/framework.rb:209:in run' [2012-07-29 16:16:33 -0600] HTTP: /home/tom/tools/arachni-0.4.1dev/gems/gems/arachni-0.4.1dev/lib/arachni/ui/cli/cli.rb:104:inblock in run'