title: No resource identifier found for attribute 'showAsAction' in package 'android'
body: <p>as the title suggest, I'm getting that error in at least 3 of the XML layout files, however, I dont see the attritube "showsAsAction" in any of those XML files, did I miss something or am I just blind?, here are the XML files in question:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="fill_parent"
      android:layout_height="fill_parent"
      android:orientation="vertical" &gt;
  
      &lt;Button
          android:id="@+id/findSelected"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:text="Registrar Asistencia" 
          android:onClick="registrarAsistencia"/&gt;
  
       &lt;ListView 
           android:id="@+id/listaAlumnos" 
           android:layout_width="fill_parent"
           android:layout_height="fill_parent" /&gt;
  
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <hr>
  
  <pre><code>&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:tools="http://schemas.android.com/tools"
      android:id="@+id/LinearLayout1"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:gravity="center|top"
      android:orientation="vertical" &gt;
  
      &lt;TextView
          android:id="@+id/lblCuenta"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:text="Cuenta"
          android:textAppearance="?android:attr/textAppearanceLarge" /&gt;
  
  
      &lt;EditText
          android:id="@+id/txtCuenta"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:ems="10" /&gt; 
  
      &lt;TextView
          android:id="@+id/lblPass"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:text="Contraseña"
          android:textAppearance="?android:attr/textAppearanceLarge" /&gt;
  
      &lt;EditText
          android:id="@+id/txtPass"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:ems="10"
          android:inputType="textPassword" /&gt;
  
      &lt;Button
          android:id="@+id/btnIniciarSesion"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:onClick="iniciarSesion"
          android:text="Iniciar Sesion" /&gt;
  
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <hr>
  
  <pre><code>&lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:tools="http://schemas.android.com/tools"
      android:layout_width="match_parent"
      android:layout_height="match_parent" &gt;
  
  
      &lt;TextView
          android:id="@+id/textView1"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_alignParentLeft="true"
          android:layout_alignParentTop="true"
          android:text="Large Text"
          android:textAppearance="?android:attr/textAppearanceLarge" /&gt;
  
  &lt;/RelativeLayout&gt;
  </code></pre>
  
  <p>Also, I'm using Android 2.2 (API 8) as the target version. I know "showAsAction" was implemented in API 11, but I just cant find the issue here.</p>
  
  <p><strong>Update:</strong> The problems panel shows the following errors:</p>
  
  <blockquote>
    <p>Error generating final archive: java.io.FileNotFoundException: C:\Users\\Documents\Android\Registro de Asistencia\bin\resources.ap_ does not exist</p>
  </blockquote>