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    <p>Do you see the line that says <code>Caused by: java.lang.NullPointerException</code> in your log? Right below that is the line <code>at weather.right.nowActivity.onCreate(nowActivity.java:37)</code></p> <p>This means there is a <code>NullPointerException</code> being thrown at line <code>37</code> of your <code>nowActivity</code>. If you double click on that line, it will open the <code>Activity</code> and take you directly to where the error is being thrown. So, keep all that in mind.</p> <p>One thing I notice is that you're using <code>setContentView</code> twice in your <code>onCreate</code> method. It looks like you'll want to use your <code>about.xml</code> in your <code>About.class</code>. Also, if you think the <code>Exception</code> that's being thrown is caused by your <code>Menu</code>, then you should post that code, as it's relevant to your OP.</p> <p>It looks like line <code>37</code> has to do with starting your <code>About.class</code>. Make sure you have it tagged in your <code>Manifest</code> and that your <code>Button</code> is a part of the <code>Layout</code> you're using for your <code>nowActivity</code>. </p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" package="weather.right.now" android:versionCode="1" android:versionName="1.1" &gt; &lt;uses-sdk android:minSdkVersion="7" /&gt; &lt;uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /&gt; &lt;application android:icon="@drawable/sun_icon" android:label="@string/app_name" &gt; &lt;activity android:name="weather.right.nowActivity" android:label="@string/app_name" &gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.MAIN" /&gt; &lt;category android:name="android.intent.category.LAUNCHER" /&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;activity android:name="weather.right.About" android:label="@string/app_name" /&gt; &lt;/application&gt; &lt;/manifest&gt; </code></pre> <p>Whichever <code>Activity</code> you want to start first, or the one that will appear inside your app drawer, should include the <code>Intent-Filter</code> tags I posted, but other <code>Activities</code> don't need to include those specific tags, some may need an <code>Intent-Filter</code> though. Also, everything in your <code>AndroidManifest</code> should go inside <strong>ONE</strong> <code>&lt;manifest&gt;&lt;/manifest&gt;</code> tag and <strong>ONE</strong> <code>&lt;application&gt;&lt;/application&gt;</code>.</p>
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    1. COThanks for the heads-up! :) I'll remember that next time I'm getting some errors. When I double clicked on the error message for row 37, it thrown me back to this line: `b.setOnClickListener(new View.OnClickListener() {`. I want to make a new window when the user is clicking on the "About" link in the menu that appears when you pressing the menu button on your phone. See my edit too se my `nowActivity.java` file and `About.java` file.
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    2. COTry the things I mentioned in my answer. You need to remove the second time your call `setContentView`, make sure you reference your `About.class` in your `Manifest`, and make sure your `Button`, `menuItem1` is a part of your `main.xml`.
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    3. CO`menuItem1` is a part of my `main.xml` file and I have now removed `setContentView(R.layout.about);` from `notActivity.java`. I don't understand what you mean with "`Manifest`". Where is that?
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