title: Android - exception launching project on start after copying a lot of code over from another project
body: <p>am getting this exception:</p>
  
  <pre><code>java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{business.premium/business.premium.Problemio}: 
  java.lang.ClassNotFoundException: business.premium.Problemio
          at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1880)
          at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
          at android.app.ActivityThread.access$600(ActivityThread.java:123)
          at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
          at android.os.Handler.dispatchMessage(Handler.java:99)
          at android.os.Looper.loop(Looper.java:137)
          at android.app.ActivityThread.main(ActivityThread.java:4424)
          at java.lang.reflect.Method.invokeNative(Native Method)
          at java.lang.reflect.Method.invoke(Method.java:511)
          at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
          at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
          at dalvik.system.NativeStart.main(Native Method)
  Caused by: java.lang.ClassNotFoundException: business.premium.Problemio
          at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
          at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
          at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
          at android.app.Instrumentation.newActivity(Instrumentation.java:1023)
          at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1871)
          ... 11 more
  java.lang.ClassNotFoundException: business.premium.Problemio
          at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
          at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
          at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
          at android.app.Instrumentation.newActivity(Instrumentation.java:1023)
          at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1871)
          at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
          at android.app.ActivityThread.access$600(ActivityThread.java:123)
          at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
          at android.os.Handler.dispatchMessage(Handler.java:99)
          at android.os.Looper.loop(Looper.java:137)
          at android.app.ActivityThread.main(ActivityThread.java:4424)
          at java.lang.reflect.Method.invokeNative(Native Method)
          at java.lang.reflect.Method.invoke(Method.java:511)
          at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
          at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
          at dalvik.system.NativeStart.main(Native Method)
  </code></pre>
  
  <p>it says that class is not there, but it IS there. I tried to configure things in my project's build path, but not too sure what to tweak there.</p>
  
  <p>And here is how I start my Manifest file:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="business.premium"
      android:versionCode="1"
      android:versionName="1.0" &gt;
  
      &lt;supports-screens  android:largeScreens="true"   android:normalScreens="true"  android:smallScreens="true"/&gt; 
  
      &lt;uses-sdk android:minSdkVersion="4" android:targetSdkVersion="15"/&gt;
      &lt;uses-permission android:name="android.permission.INTERNET" /&gt;
  
      &lt;application
          android:icon="@drawable/ic_launcher"
          android:label="@string/app_name" 
          android:theme="@style/CustomTheme" 
          android:name="MyApplication"
          android:debuggable="true"&gt;
          &lt;activity
              android:name=".Problemio"
              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;
  </code></pre>
  
  <p>Any thoughts on how to solve this, or what to look into?  Thanks!</p>