Pathname.exist? != File.exists?

middleman-core/bin/middleman

@@ -12,7 +12,7 @@ require "pathname"
 
 # Recursive method to find config.rb
 def locate_root(cwd = Pathname.new(Dir.pwd))
-  return cwd.to_s if (cwd + 'config.rb').exists?
+  return cwd.to_s if (cwd + 'config.rb').exist?
   return false if cwd.root?
   locate_root(cwd.parent)
 end

middleman-core/lib/middleman-core/core_extensions/file_watcher.rb

@@ -107,7 +107,7 @@ module Middleman
         # @param [Boolean] only_new Whether we only look for new files
         # @return [void]
         def reload_path(path, only_new=false)
-          return unless path.exists?
+          return unless path.exist?
           
           glob = "#{path}**/*"
           subset = @known_paths.select { |p| p.fnmatch(glob) }