diff --git a/common/bootstrap.js b/common/bootstrap.js
index 4ab93a0f..467d669d 100755
--- a/common/bootstrap.js
+++ b/common/bootstrap.js
@@ -169,9 +169,11 @@ function init() {
     }
 
     try {
-        module("resource://dactyl-local-content/disable-acr.jsm").init();
+        module("resource://dactyl-content/disable-acr.jsm").init(addon.id);
+    }
+    catch (e) {
+        reportError(e);
     }
-    catch (e) {}
 
     if (JSMLoader && JSMLoader.bump != 3) // Temporary hack
         Services.scriptloader.loadSubScript("resource://dactyl" + suffix + "/bootstrap.jsm",
@@ -197,9 +199,11 @@ function shutdown(data, reason) {
     dump("dactyl: bootstrap: shutdown " + reasonToString(reason) + "\n");
     if (reason != APP_SHUTDOWN) {
         try {
-            module("resource://dactyl-local-content/disable-acr.jsm").cleanup();
+            module("resource://dactyl-content/disable-acr.jsm").init(addon.id);
+        }
+        catch (e) {
+            reportError(e);
         }
-        catch (e) {}
 
         if ([ADDON_UPGRADE, ADDON_DOWNGRADE, ADDON_UNINSTALL].indexOf(reason) >= 0)
             Services.obs.notifyObservers(null, "dactyl-purge", null);
diff --git a/pentadactyl/content/disable-acr.jsm b/common/content/disable-acr.jsm
similarity index 90%
rename from pentadactyl/content/disable-acr.jsm
rename to common/content/disable-acr.jsm
index f5ebe74b..de231635 100644
--- a/pentadactyl/content/disable-acr.jsm
+++ b/common/content/disable-acr.jsm
@@ -1,7 +1,7 @@
 // By Kris Maglione. Public Domain.
 // Please feel free to copy and use at will.
 
-const ADDON_ID     = "pentadactyl@dactyl.googlecode.com";
+var ADDON_ID;
 
 const OVERLAY_URLS = [
     "about:addons",
@@ -18,12 +18,15 @@ function observe(window, topic, url) {
     if (topic === "chrome-document-global-created")
         checkDocument(window.document);
 }
-function init(disable) {
-    Services.obs[disable ? "removeObserver" : "addObserver"](observe, "chrome-document-global-created", false);
+function init(id) {
+    if (id)
+        ADDON_ID = id;
+
+    Services.obs[id ? "addObserver" : "removeObserver"](observe, "chrome-document-global-created", false);
     for (let doc in chromeDocuments)
-        checkDocument(doc, disable);
+        checkDocument(doc, !id);
 }
-function cleanup() { init(true); }
+function cleanup() { init(null); }
 
 function checkPopup(event) {
     let doc = event.originalTarget.ownerDocument;
diff --git a/common/modules/overlay.jsm b/common/modules/overlay.jsm
index 0178e5d2..b34f60b3 100644
--- a/common/modules/overlay.jsm
+++ b/common/modules/overlay.jsm
@@ -249,13 +249,7 @@ var Overlay = Module("Overlay", {
                             defineModule.loadLog.push(" from: " + util.fixURI(frame.filename) + ":" + frame.lineNumber);
 
                         let obj = defineModule.time(module.className, "init", module);
-                        try {
-                            delete modules[module.className];
-                            modules[module.className] = obj;
-                        }
-                        catch (e) {
-                            Class.replaceProperty(modules, module.className, obj);
-                        }
+                        Class.replaceProperty(modules, module.className, obj);
                         loaded[module.className] = true;
 
                         frob(module.className);