Android: Views in ScrollView doesn't appear past empty LinearLayout

On Android 4, I have a simple ScrollView which presents a form to fill in. Inside the view I have a number of buttons, then this Layout,

<LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/layoutImages" /> 

then more buttons. The layout always stops rendering at the LinearLayout. If I move the layout down the list of views, all views above it appear. I can reference the other layouts in code nicely so they are there, just not visible.

Do I need to do something to the LinearLayout to prevent it from stopping the rendering of all the subsequent views?

For reference, here's the full layout:

<?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:minWidth="25px" android:minHeight="25px" android:layout_width="fill_parent" android:layout_height="fill_parent" android:fillViewport="true" android:id="@+id/scrView"> <LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="@drawable/background_selector"> <Button android:text="Call Crime Stoppers" android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/btnCall" android:layout_marginRight="3dp" android:layout_marginLeft="3dp" android:layout_marginTop="5dp" android:background="@drawable/blue_button_selector" android:textSize="25dp" android:textColor="@color/white" android:drawableLeft="@drawable/phone_element" /> <TextView android:text="About the Incident:" android:textAppearance="?android:attr/textAppearanceMedium" android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/lblDescriptionTop" android:layout_marginTop="15dp" /> <Button android:text="Take a Picture" android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/btnPicture" android:layout_marginRight="3dp" android:layout_marginLeft="3dp" android:layout_marginTop="5dp" android:background="@drawable/blue_button_selector" android:textSize="25dp" android:textColor="@color/white" android:drawableLeft="@drawable/icon_camera" /> <LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/layoutImages" /> <Button android:text="Location Type" android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/btnLocationType" android:layout_marginRight="3dp" android:layout_marginLeft="3dp" android:layout_marginTop="5dp" android:background="@drawable/blue_button_selector" android:textSize="25dp" android:textColor="@color/white" /> <Button android:text="Nature of the Incident" android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/btnNature" android:layout_marginRight="3dp" android:layout_marginLeft="3dp" android:background="@drawable/blue_button_selector" android:textSize="25dp" android:textColor="@color/white" android:layout_marginTop="5dp" /> <TextView android:text="Please Describe:" android:textAppearance="?android:attr/textAppearanceMedium" android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/lblDescription" android:layout_marginTop="15dp" /> <EditText android:inputType="textMultiLine" android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/txtDescription" android:minHeight="150dp" android:maxHeight="150dp" android:layout_marginTop="5dp" android:minWidth="150dp" android:maxWidth="150dp" /> <TextView android:text="Optional Contact Info:" android:textAppearance="?android:attr/textAppearanceMedium" android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/textView1" android:layout_marginTop="15dp" /> <CheckBox android:text="Use Phone Number?" android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/chkPhone" /> <EditText android:inputType="phone" android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/editPhone" android:hint="Phone Number" /> <CheckBox android:text="Use Email" android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/chkEmail" /> <EditText android:inputType="phone" android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/editEmail" android:hint="Email" /> <Button android:text="Send" android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/btnSend" android:layout_marginRight="3dp" android:layout_marginLeft="3dp" android:background="@drawable/blue_button_selector" android:textSize="25dp" android:textColor="@color/white" android:layout_marginTop="15dp" /> </LinearLayout> </ScrollView>