Android XML error message

Question

Everytime I open an XML layout file, the following error message displays:

An internal error occurred during: "Check Android SDK". java.util.ConcurrentModificationException

The error message is easily dismiss-able, and my program still runs fine. I have tried restarting Eclipse and my computer with no success. The problem has not always been there, but I am not entirely sure when it started happening. Any ideas or links are appreciated!

Example XML file

<LinearLayout 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"
    android:orientation="vertical"
    android:gravity="center_horizontal"
    tools:context="${packageName}.${activityClass}" >

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textSize="@dimen/text_title_main"
    android:text="@string/app_name" />

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textSize="@dimen/text_subtitle_main"
    android:text="@string/app_desc" />

</LinearLayout>

Exact error message

Answer 1

Check your AndroidManifest.xml and see if the targeted SDK version matches the latest Android SDK Build tool you have downloaded.

Also check Eclipse under Window -> Preferences -> Android if the Platform is available and if the max API level matches.