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Error on one of the PC while playing video with Silverlight using Telerik controls

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This is a migrated thread and some comments may be shown as answers.
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PK asked on 14 Apr 2015, 07:02 PM

Hello I am trying to figure out what could be the problem with only one of PC not playing video with Silverlight using Telerik controls. As soon as I open the book that is supposed to play a .ismv file; I get following error in "Inspect Element" on IE & Chrome as well as "Firebug" for Firefox:


Uncaught Error: Unhandled Error in Silverlight Application [Arg_COMException]
Debugging resource strings are unavailable. Often the key and arguments provide sufficient information to diagnose the problem. 
   at MS.Internal.XcpImports.CheckHResult(UInt32 hr)
   at MS.Internal.XcpImports.Analytics_Start()
   at Microsoft.Expression.Encoder.AdaptiveStreaming.PlaybackInfo..ctor(MediaElement me)
   at Microsoft.Expression.Encoder.AdaptiveStreaming.AdaptiveStreamingSource.set_MediaElement(MediaElement value)
   at Training.BaseBook.StartMediaPlayback(RadMediaItem mediaItem, MediaElement mediaElement)
   at SixPoint.MainPage.HomeTeamVideo_6Pt_StreamAttached(Object sender, EventArgs e)
   at Telerik.Windows.Controls.RadMediaItem.AttachStream()
   at Telerik.Windows.Controls.RadMediaPlayer.Play()
   at SixPoint.MainPage.HomeTeamBook_PageChanged(Object sender, RadRoutedEventArgs e)
   at Telerik.Windows.RadRoutedEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   at Telerik.Windows.RadRoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at Telerik.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RadRoutedEventArgs routedEventArgs)
   at Telerik.Windows.EventRoute.InvokeHandlersImpl(Object source, RadRoutedEventArgs args, Boolean raisedAgain)
   at Telerik.Windows.RadRoutedEventHelper.RaiseEvent(DependencyObject element, RadRoutedEventArgs args)
   at Telerik.Windows.Controls.RadBook.OnPageChanged(RadRoutedEventArgs e)
   at Telerik.Windows.Controls.RadBook.OnCurrentSheetIndexChanged(Int32 newValue, Int32 oldValue)
   at Telerik.Windows.Controls.RadBook.OnRightPageIndexChanged(Int32 rightPageIndex)
   at Telerik.Windows.Controls.RadBook.OnRightPageIndexPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
   at Telerik.Windows.PropertyMetadata.<>c__DisplayClass1.<Create>b__0(DependencyObject d, DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.RaisePropertyChangeNotifications(DependencyProperty dp, Object oldValue, Object newValue)
   at System.Windows.DependencyObject.UpdateEffectiveValue(DependencyProperty property, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, ValueOperation operation)
   at System.Windows.DependencyObject.SetValueInternal(DependencyProperty dp, Object value, Boolean allowReadOnlySet, Boolean isBindingInStyleSetter)
   at Telerik.Windows.Controls.RadBook.PageTurner_Completed(Object sender, PageTurnEventArgs e)
   at Telerik.Windows.Controls.Book.PageTurner.Timer_Tick(Object sender, EventArgs e)
   at MS.Internal.CoreInvokeHandler.InvokeEventHandler(UInt32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
   at MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)


Not sure what is causing the problem ? I have re-installed both Silverlight and .NET framework on this PC to match the PCs that do work fine and play the video. Only Firefox and Chrome play the video on other PCs but this one gets hung with the same error (mentioned above) in all 3 browsers - IE, Firefox and Chrome. 

The .ismv file was created using MS Expression Encoder 3.0

Any suggestions ? I am trying to help my client figure this out and no luck so far..



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answered on 14 Apr 2015, 07:07 PM

Just to add to my original question.. here is an snippet from the reply I got from one if the MS Silverlight forums..


"...I can see it's a problem with some sort of com component.Exactly which that is with a Telerik control, I don't know.I would guess the com component is not present or is not registered.  This might be something totally separate from .net and Silverlight.  Maybe part of the telerik stuff.  ..."



Kiril Vandov
Telerik team
answered on 17 Apr 2015, 10:07 AM
Hello PK,

We are not aware of such issue or limitation and you are the first one reporting it. That is why I would like to ask you for more information about the scenario in order to try and reproduce it on our side.
- the OS on the computer.
- the exact version of SL that is installed.
- does the issue only occur with ".ismv" files? Could you please try and run other file with the same format and also try to run file with different format?
- the exact version of the browsers used on the computer.
- do you define and load videos like shown in our documentation. Or you are using some custom code that is out of the ordinary. If you can show us a code snippet of the xaml and file/stream setting will be great.

Looking forward to hearing from you.

Kind regards,
Kiril Vandov

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Kiril Vandov
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