WPScan Error Output

curl_output.sh

~/projects/wpscan [13:22:19] [ruby-2.1.2@rails4] $ curl -IkL http://example.com/?author=1
HTTP/1.1 301 Moved Permanently
Content-Length: 157
Content-Type: text/html; charset=UTF-8
Location: http://example.com/author/admin/
Server: Microsoft-IIS/8.0
X-Powered-By: PHP/5.4.23
X-Pingback: http://example.com/xmlrpc.php
X-Powered-By: ASP.NET
Set-Cookie: ARRAffinity=1585cb42abd371ffda100f8cd315354b3b6a2e7476bd3a0acfa838f0a0af0abb;Path=/;Domain=example.com
Date: Thu, 14 Aug 2014 20:24:06 GMT

HTTP/1.1 200 OK
Content-Length: 0
Content-Type: text/html; charset=UTF-8
Server: Microsoft-IIS/8.0
X-Powered-By: PHP/5.4.23
X-Pingback: http://example.com/xmlrpc.php
X-Powered-By: ASP.NET
Set-Cookie: ARRAffinity=1585cb42abd371ffda100f8cd315354b3b6a2e7476bd3a0acfa838f0a0af0abb;Path=/;Domain=example.com
Date: Thu, 14 Aug 2014 20:24:06 GMT

output.rb

ruby wpscan.rb -u example.com --enumerate


[!] Stop User Enumeration plugin detected, results might be empty. However a bypass exists, see stop_user_enumeration_bypass.rb in /Users/superscott/projects/wpscan

undefined method `[]' for nil:NilClass
/Users/superscott/projects/wpscan/lib/common/models/wp_user/existable.rb:40:in `login_from_author_pattern': undefined method `[]' for nil:NilClass (NoMethodError)
    from /Users/superscott/projects/wpscan/lib/common/models/wp_user/existable.rb:25:in `load_from_response'
    from /Users/superscott/projects/wpscan/lib/common/models/wp_user/existable.rb:11:in `exists_from_response?'
    from /Users/superscott/projects/wpscan/lib/common/models/wp_item/existable.rb:18:in `exists?'
    from /Users/superscott/projects/wpscan/lib/common/collections/wp_items/detectable.rb:37:in `block (2 levels) in aggressive_detection'
    from /Users/superscott/.rvm/gems/ruby-2.1.2@rails4/gems/typhoeus-0.6.9/lib/typhoeus/request/callbacks.rb:129:in `call'
    from /Users/superscott/.rvm/gems/ruby-2.1.2@rails4/gems/typhoeus-0.6.9/lib/typhoeus/request/callbacks.rb:129:in `block in execute_callbacks'
    from /Users/superscott/.rvm/gems/ruby-2.1.2@rails4/gems/typhoeus-0.6.9/lib/typhoeus/request/callbacks.rb:128:in `map'
    from /Users/superscott/.rvm/gems/ruby-2.1.2@rails4/gems/typhoeus-0.6.9/lib/typhoeus/request/callbacks.rb:128:in `execute_callbacks'
    from /Users/superscott/.rvm/gems/ruby-2.1.2@rails4/gems/typhoeus-0.6.9/lib/typhoeus/request/operations.rb:35:in `finish'
    from /Users/superscott/.rvm/gems/ruby-2.1.2@rails4/gems/typhoeus-0.6.9/lib/typhoeus/easy_factory.rb:105:in `block in set_callback'
    from /Users/superscott/.rvm/gems/ruby-2.1.2@rails4/gems/ethon-0.7.1/lib/ethon/easy/response_callbacks.rb:65:in `call'
    from /Users/superscott/.rvm/gems/ruby-2.1.2@rails4/gems/ethon-0.7.1/lib/ethon/easy/response_callbacks.rb:65:in `block in complete'
    from /Users/superscott/.rvm/gems/ruby-2.1.2@rails4/gems/ethon-0.7.1/lib/ethon/easy/response_callbacks.rb:65:in `each'
    from /Users/superscott/.rvm/gems/ruby-2.1.2@rails4/gems/ethon-0.7.1/lib/ethon/easy/response_callbacks.rb:65:in `complete'
    from /Users/superscott/.rvm/gems/ruby-2.1.2@rails4/gems/ethon-0.7.1/lib/ethon/multi/operations.rb:148:in `check'
    from /Users/superscott/.rvm/gems/ruby-2.1.2@rails4/gems/ethon-0.7.1/lib/ethon/multi/operations.rb:161:in `run'
    from /Users/superscott/.rvm/gems/ruby-2.1.2@rails4/gems/ethon-0.7.1/lib/ethon/multi/operations.rb:43:in `perform'
    from /Users/superscott/.rvm/gems/ruby-2.1.2@rails4/gems/typhoeus-0.6.9/lib/typhoeus/hydra/runnable.rb:15:in `run'
    from /Users/superscott/.rvm/gems/ruby-2.1.2@rails4/gems/typhoeus-0.6.9/lib/typhoeus/hydra/memoizable.rb:51:in `run'
    from wpscan.rb:394:in `ensure in main'
    from wpscan.rb:394:in `main'
    from wpscan.rb:398:in `<main>'