diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0c722325..21cb3ff3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# v4.5.1:
+* Clean up on 12.04 template - do dist-upgrade, include omnibus bin in $PATH, nicer first-boot.json
+* Removing superfluous raise on duplicate machines during load
+
 # v4.5.0: upgraded to 12.04 bootstrap
 * First stab at 12.04 from @nickmarden's pull #171 - uses omnibus, not autobuild ruby
 * Removed bad 11.10 bootstrap script - used incompatible ruby install
diff --git a/VERSION b/VERSION
index ae153944..99523d47 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.5.0
\ No newline at end of file
+4.5.1
\ No newline at end of file
diff --git a/ironfan.gemspec b/ironfan.gemspec
index 5f0d630f..a69e353a 100644
--- a/ironfan.gemspec
+++ b/ironfan.gemspec
@@ -5,11 +5,11 @@
 
 Gem::Specification.new do |s|
   s.name = "ironfan"
-  s.version = "4.5.0"
+  s.version = "4.5.1"
 
   s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version=
   s.authors = ["Infochimps"]
-  s.date = "2012-11-07"
+  s.date = "2012-11-14"
   s.description = "Ironfan allows you to orchestrate not just systems but clusters of machines. It includes a powerful layer on top of knife and a collection of cloud cookbooks."
   s.email = "coders@infochimps.com"
   s.extra_rdoc_files = [
diff --git a/lib/ironfan/provider/ec2/machine.rb b/lib/ironfan/provider/ec2/machine.rb
index 704dc2a3..8557d0cd 100644
--- a/lib/ironfan/provider/ec2/machine.rb
+++ b/lib/ironfan/provider/ec2/machine.rb
@@ -108,7 +108,6 @@ def self.load!(cluster=nil)
               next unless Ironfan.chef_config[:include_terminated]
               remember machine, :append_id => "terminated:#{machine.id}"
             elsif recall? machine.name
-              raise 'duplicate'
               machine.bogus <<                 :duplicate_machines
               recall(machine.name).bogus <<    :duplicate_machines
               remember machine, :append_id => "duplicate:#{machine.id}"