Error: No resource found that matches the given name (at 'title' with value '@string/menu_settings')
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I'm doing the exercise"sudoku" from the book "hello to android".
I saw some people have the same issue as me but I'm unable to solve it.
I have deleted three times this project and re-create from the beginning but I keep getting the same error message on below ,even if i'm doing a copy/paste from the book.


"W/ResourceType( 8592): Bad XML block: header size 29806 or total size 538970658 is larger than data size 0
    C:\java\Sudoku\res\layout\activity_main.xml:6: error: Error: No resource found that matches the given name (at 'text' with value '@string/hello_world').
C:\java\Sudoku\res\menu\activity_main.xml:2: error: Error: No resource found that matches the given name (at 'title' with value '@string/menu_settings').
"

There is the code inside the book  for the "Sudokuv1/res/layout/main1.xml" :

    
    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >
    <TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/main_title" />
    <Button
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/continue_label" />
    <Button
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/new_game_label" />
    <Button
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/about_label" />
    <Button
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/exit_label" />
    </LinearLayout>    


There is the code for "Sudokuv1/res/values/strings.xml":

    <?xml version="1.0" encoding="utf-8"?>
    <resources>
    <string name="app_name">Sudoku</string>
    <string name="main_title">Android Sudoku</string>
    <string name="continue_label">Continue</string>
    <string name="new_game_label">New Game</string>
    <string name="about_label">About</string>
    <string name="exit_label">Exit</string>
    </resources>


thank you for your help