diff --git a/project.clj b/project.clj
index f777a2e..e9ab269 100644
--- a/project.clj
+++ b/project.clj
@@ -1,4 +1,4 @@
-(defproject mw-engine "0.1.2-SNAPSHOT"
+(defproject mw-engine "0.1.2"
   :description "Cellular automaton world builder."
   :url "http://www.journeyman.cc/microworld/"
   :manifest {
diff --git a/src/mw_engine/core.clj b/src/mw_engine/core.clj
index ae3a065..771f355 100644
--- a/src/mw_engine/core.clj
+++ b/src/mw_engine/core.clj
@@ -2,7 +2,8 @@
 
 (ns mw-engine.core
   (:use mw-engine.utils)
-  (:require [mw-engine.world :as world]))
+  (:require [mw-engine.world :as world])
+  (:gen-class))
 
 ;; Every rule is a function of two arguments, a cell and a world. If the rule
 ;; fires, it returns a new cell, which should have the same values for :x and
diff --git a/src/mw_engine/heightmap.clj b/src/mw_engine/heightmap.clj
index b31008e..da13bd4 100644
--- a/src/mw_engine/heightmap.clj
+++ b/src/mw_engine/heightmap.clj
@@ -7,7 +7,7 @@
   (:import [java.awt.image BufferedImage])
   (:use mw-engine.utils
         mw-engine.world)
-  (:require [fivetonine.collage.util :as collage]
+  (:require [fivetonine.collage.util :as collage :only [load-image]]
             [mikera.image.core :as imagez :only [filter-image get-pixels]]
             [mikera.image.filters :as filters]))
 
diff --git a/src/mw_engine/version.clj b/src/mw_engine/version.clj
index 18b9b0e..d3fa41d 100644
--- a/src/mw_engine/version.clj
+++ b/src/mw_engine/version.clj
@@ -3,9 +3,14 @@
 
 (defn get-implementation-version 
   "Get the implementation version from the package of this namespace, which must
-   be compiled into a class (see clojure.java.interop)"
-  [namespace-class]
-  (.getImplementationVersion (.getPackage namespace-class)))
+   be compiled into a class (see clojure.java.interop). See 
+   http://stackoverflow.com/questions/12599889/how-to-get-runtime-access-to-version-number-of-a-running-clojure-application
+   TODO: doesn't work yet."
+  []
+  (try 
+    (.getImplementationVersion (.getPackage (eval 'mw-engine.version)))
+    (catch Exception any "Unknown")
+    ))
 
 (defn -main []
-  (get-implementation-version (eval 'mw-engine.version)))
+  (get-implementation-version ))