diff --git a/src/browser.js b/src/browser.js
index b9123e8..24e453a 100644
--- a/src/browser.js
+++ b/src/browser.js
@@ -69,6 +69,12 @@ app.on('ready', function () {
     autoUpdater.quitAndInstall();
   });
 
+  ipc.on('deconst:preparer-completion', function () {
+    if (!mainWindow || !mainWindow.isFocused()) {
+      app.dock.bounce();
+    }
+  });
+
   if (os.platform() === 'win32') {
     mainWindow.on('close', function () {
       mainWindow.webContents.send('application:quitting');
diff --git a/src/stores/ContentRepositoryStore.js b/src/stores/ContentRepositoryStore.js
index 18f1741..41a66f7 100644
--- a/src/stores/ContentRepositoryStore.js
+++ b/src/stores/ContentRepositoryStore.js
@@ -56,7 +56,7 @@ class ContentRepositoryStore {
     ContentRepositoryUtil.launchControlPreparer(r);
 
     let installWatcher = (root, fn, callback) => {
-      let ignored = ['_build/**', '_site/**', '.git/**', '.DS_Store', 'npm-debug.log', 'build',
+      let ignored = ['_build/**', '_site/**', '.git/**', '.DS_Store', 'npm-debug.log*', 'build',
         '**/node_modules/**'];
       let gitignorePath = path.join(root, ".gitignore");
 
@@ -164,40 +164,13 @@ class ContentRepositoryStore {
     // Identify which repository this container belongs to, if any.
     for(let id in this.repositories) {
       let r = this.repositories[id];
+
       if (r.contentPreparerContainer && r.contentPreparerContainer.Id === container.Id) {
-        r.contentPreparerContainer = null;
-
-        // This repository's preparer has completed.
-        if (container.State.ExitCode === 0) {
-          // Clean exit. Hooray!
-          if (!r.isPreparing()) {
-            r.state = "ready";
-            r.hasPrepared = true;
-          }
-        } else if (container.State.ExitCode === 137) {
-          // Killed, presumably to run a new preparer.
-        } else {
-          // Boom! Something went wrong.
-          r.reportError(`The content preparer exited with status ${container.State.ExitCode}.`);
-        }
+        r.reportPreparerComplete(container);
       }
 
       if (r.controlPreparerContainer && r.controlPreparerContainer.Id === container.Id) {
-        // The control preparer has completed.
-        r.controlPreparerContainer = null;
-
-        if (container.State.ExitCode === 0) {
-          // Clean exit. Hooray!
-          if (!r.isPreparing()) {
-            r.state = "ready";
-            r.hasPrepared = true;
-          }
-        } else if (container.State.ExitCode === 137) {
-          // Killed, presumably to run a new preparer.
-        } else {
-          // Boom! Something went wrong.
-          r.reportError(`The control preparer exited with status ${container.State.ExitCode}.`);
-        }
+        r.reportPreparerComplete(container);
       }
 
       if (r.contentContainer && r.contentContainer.Id === container.Id) {
diff --git a/src/utils/ContentRepositoryUtil.js b/src/utils/ContentRepositoryUtil.js
index d815e3c..fd3a402 100644
--- a/src/utils/ContentRepositoryUtil.js
+++ b/src/utils/ContentRepositoryUtil.js
@@ -7,6 +7,7 @@ import mkdirp from 'mkdirp';
 import osenv from 'osenv';
 import urlJoin from 'url-join';
 import _ from 'underscore';
+import ipc from 'ipc';
 
 import DockerUtil from './DockerUtil';
 import ContentRepositoryActions from '../actions/ContentRepositoryActions';
@@ -178,6 +179,38 @@ export class ContentRepository {
     };
   }
 
+  reportPreparerComplete(container) {
+    let preparerName;
+
+    if (this.contentPreparerContainer && this.contentPreparerContainer.Id === container.Id) {
+      this.contentPreparerContainer = null;
+      preparerName = "content";
+    }
+
+    if (this.controlPreparerContainer && this.controlPreparerContainer.Id === container.Id) {
+      this.controlPreparerContainer = null;
+      preparerName = "control";
+    }
+
+    if (!preparerName) {
+      return;
+    }
+
+    if (container.State.ExitCode === 0) {
+      // Clean exit. Hooray!
+      if (!this.isPreparing()) {
+        this.state = "ready";
+        this.hasPrepared = true;
+        ipc.send('deconst:preparer-completion');
+      }
+    } else if (container.State.ExitCode === 137) {
+      // Killed, presumably to run a new preparer.
+    } else {
+      // Boom! Something went wrong.
+      this.reportError(`The ${preparerName} preparer exited with status ${container.State.ExitCode}.`);
+    }
+  }
+
   reportError(message) {
     this.state = "error";
     this.error = message;