Automatically convert all customize arguments to strings.

CHANGELOG.md

@@ -34,6 +34,7 @@
     VM in a multi-VM environment. [GH-761]
   - With puppet you can now specify `:facter` as a dictionary of facts to
     override what is generated by Puppet. [GH-753]
+  - Automatically convert all arguments to `customize` to strings.
 
 ## 0.9.7 (February 9, 2012)
 

lib/vagrant/action/vm/customize.rb

@@ -15,7 +15,7 @@ module Vagrant
             customizations.each do |command|
               processed_command = command.collect do |arg|
                 arg = env[:vm].uuid if arg == :id
-                arg
+                arg.to_s
               end
 
               result = env[:vm].driver.execute_command(processed_command)