Driver forwarding to 4.1 works properly

lib/vagrant/driver/virtualbox.rb

@@ -41,7 +41,9 @@ module Vagrant
         end
 
         # Instantiate the proper version driver for VirtualBox
-        @driver = VirtualBox_4_1.new(@uuid)
+        driver_klass = VirtualBox_4_1
+        @logger.info("Using VirtualBox driver: #{driver_klass}")
+        @driver = driver_klass.new(@uuid)
 
         if @uuid
           # Verify the VM exists, and if it doesn't, then don't worry
@@ -61,6 +63,7 @@ module Vagrant
                                :export,
                                :forward_ports,
                                :halt,
+                               :import,
                                :read_forwarded_ports,
                                :read_bridged_interfaces,
                                :read_guest_additions_version,

lib/vagrant/driver/virtualbox_4_1.rb

@@ -7,6 +7,8 @@ module Vagrant
     # Driver for VirtualBox 4.1.x
     class VirtualBox_4_1 < VirtualBoxBase
       def initialize(uuid)
+        super()
+
         @logger = Log4r::Logger.new("vagrant::driver::virtualbox_4_1")
         @uuid = uuid
       end
@@ -343,7 +345,7 @@ module Vagrant
       end
 
       def vm_exists?(uuid)
-        raw("showvminfo", uuid).exit_code != 0
+        raw("showvminfo", uuid).exit_code == 0
       end
     end
   end

lib/vagrant/driver/virtualbox_base.rb

@@ -128,7 +128,7 @@ module Vagrant
       # @param [String] ovf Path to the OVF file.
       # @param [String] name Name of the VM.
       # @return [String] UUID of the imported VM.
-      def import
+      def import(ovf, name)
       end
 
       # Returns a list of forwarded ports for a VM.