Since you are refering the attributes fro your library instead of giving the full path of the library give "res-auto" please see the change
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:dslv="http://schemas.android.com/apk/res-auto"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<include layout="@layout/header"/>
<com.mobeta.android.dslv.DragSortListView
android:id="@+id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:divider="#D9D9D9"
android:dividerHeight="2dp"
android:listSelector="@drawable/list_selector"
dslv:drag_enabled="true"
dslv:drag_scroll_start="0.33"
dslv:drag_start_mode="onDown"/>