When set up an XML layout I got an error in eclipse that states: "Couldn't resolve @id/entry"

here is my Layout:
Java Code:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content">
    
    <TextView  android:id="@+id/label"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="URL:"
        android:layout_alignBaseline="@+id/entry"
        android:layout_alignParentLeft="true"/>

    <EditText
        android:id="@id/entry"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_toRightOf="@+id/label" />

    <Button
        android:id="@+id/ok"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/entry"
        android:layout_alignRight="@id/entry"
        android:text="OK"/>

    <Button
        android:id="@+id/cancel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/entry"
        android:layout_toLeftOf="@+id/ok"
        android:text="Cancel" />
    
</RelativeLayout>
I am pretty new to eclipse also, I wish it would give you more info on why? It still installs the APK on the emulator or my phone. I am just concerned about the consequences of such an error on a release app and why I am getting this error.

Thanks.