<Grid

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:c="http://schemas.openxmlformats.org/markup-compatibility/2006"

xmlns:d="http://schemas.microsoft.com/expression/interactivedesigner/2006"

c:Ignorable="d"

Background="#FFFFFFFF"

x:Name="DocumentRoot"

x:Class="UntitledProject2.Scene1"

Width="640" Height="480">

<Grid.Resources>

<Storyboard x:Key="OnLoaded"/>

</Grid.Resources>

<Grid.Triggers>

<EventTrigger RoutedEvent="Button.Click" SourceName="playButton">

<EventTrigger.Actions>

<BeginStoryboard Name= "myBegin">

<Storyboard>

<MediaTimeline Source="file:\\\C:\Documents and Settings\Tommy\Desktop\Halo2v3_Low_640.wmv" Storyboard.TargetName="myvideo"/>

</Storyboard>

</BeginStoryboard>

</EventTrigger.Actions>

</EventTrigger>

<EventTrigger RoutedEvent="Button.Click" SourceName="pauseButton">

<EventTrigger.Actions>

<PauseStoryboard BeginStoryboardName="myBegin" />

</EventTrigger.Actions>

</EventTrigger>

</Grid.Triggers>

<Grid.ColumnDefinitions>

<ColumnDefinition/>

</Grid.ColumnDefinitions>

<Grid.RowDefinitions>

<RowDefinition/>

</Grid.RowDefinitions>

<StackPanel>

<MediaElement Name="myvideo"/>

<Button Name="playButton" >Play</Button>

<Button Name="pauseButton" >Pause</Button>

</StackPanel>

</Grid>

Same errors as mentioned in previous post.  Sometimes it's blank, other times it says:

"No operations are valid on a closed media player except open and close."
"   at MS.Internal.HRESULT.Check(Int32 hr)\r\n   at System.Windows.Media.MediaPlayer.SetPosition(TimeSpan value)\r\n   at System.Windows.Media.MediaClock.Sync()\r\n   at System.Windows.Media.MediaClock.SpeedChanged()\r\n   at System.Windows.Media.Animation.Clock.RaiseAccumulatedEvents()\r\n   at System.Windows.Media.Animation.TimeManager.RaiseEnqueuedEvents()\r\n   at System.Windows.Media.Animation.TimeManager.Tick()\r\n   at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)\r\n   at System.Windows.Media.MediaContext.AnimatedRenderMessageHandler(Object resizedCompositionTarget)\r\n   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)\r\n   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)\r\n   at System.Windows.Threading.DispatcherOperation.InvokeImpl()\r\n   at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)\r\n   at System.Threading.ExecutionContext.runTryCode(Object userData)\r\n   at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)\r\n   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)\r\n   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)\r\n   at System.Windows.Threading.DispatcherOperation.Invoke()\r\n   at System.Windows.Threading.Dispatcher.ProcessQueue()\r\n   at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)\r\n   at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)\r\n   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)\r\n   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)\r\n   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)\r\n   at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Boolean isSingleParameter)\r\n   at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg)\r\n   at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)\r\n   at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)\r\n   at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)\r\n   at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)\r\n   at System.Windows.Threading.Dispatcher.Run()\r\n   at System.Windows.Application.RunInternal(Window window)\r\n   at System.Windows.Application.Run(Window window)\r\n   at System.Windows.Application.Run()\r\n   at UntitledProject2.MainApplication.Main() in C:\\Documents and Settings\\Tommy\\My Documents\\Interactive Designer Projects\\TestVideo\\obj\\Debug\\Application.g.cs:line 50\r\n   at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args)\r\n   at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)\r\n   at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()\r\n   at System.Threading.ThreadHelper.ThreadStart_Context(Object state)\r\n   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)\r\n   at System.Threading.ThreadHelper.ThreadStart()"

Thanks,
<T>