Unexpected closed captions file extension found at publish time: .jpg

Hi guys, it's been a long time ;)

Each time I try to publish this presentation, I get this error report :

<?xml version="1.0" encoding="utf-16"?>
<ErrorReport xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<FirstName />
<LastName />
<EmailAddress>
<UserId>
<MachineName>
<HardwareId>
<Message>Unexpected closed captions file extension found at publish time: .jpg</Message>
<StackTrace> à Articulate.Design.ClosedCaptions.ClosedCaptionsAssetParser.a(String A_0)
à Articulate.Design.ClosedCaptions.ClosedCaptionsAssetParser.ParseCaptionCues()
à Articulate.Design.ClosedCaptions.ClosedCaptionsPublisher.a(ClosedCaptionsAssetParser A_0, IList`1 A_1)
à Articulate.Design.ClosedCaptions.ClosedCaptionsPublisher.PublishClosedCaptions(ClosedCaptionsAssetParser closedCaptionsAssetParser, String publishedMediaFileName)
à Articulate.Design.Publish.Player.PlayerUtils.AddAudio(IPlayerService service, bwSlideBase slideobj, String id, String sourceFilePath, String mp3Filename, String friendlyName, IAudioConversionProgress progress, Boolean canNormalize, Asset closedCaptionsAsset)
à Articulate.Design.Shapes.Sound.CreateStageObject(IPlayerService service, bwSlideBase slide)
à Articulate.Design.Shape.GetStageObject(IPlayerService service, bwSlideBase slide)
à Articulate.Design.Shape.Articulate.Player.IPlayerShape.GetStageObject(IPlayerService service, bwSlideBase slide)
à Articulate.Player.PlayerContentPublisher.a(IEnumerable`1 A_0, bwSlideBase A_1)
à Articulate.Player.PlayerContentPublisher.CreateSlideObject(IPlayerSlide slide, bwISlideContainer sceneobj)
à Articulate.Player.PlayerContentPublisher.CreateBridgewaterSlide(PlayerWriterSettings settings, IPlayerSlide slide, bwISlideContainer sceneobj)
à Articulate.Player.PlayerContentPublisher.CreateContentScenes(PlayerWriterSettings settings, IPlayerContentProvider contentProvider)
à Articulate.Player.PlayerWriter.WriteContent(IPlayerContentProvider contentProvider, Nullable`1 merged)
à Articulate.Player.PlayerWriter.Write(IPlayerContentProvider contentProvider)
à Articulate.Design.Publish.TargetContext.PublishBackgroundWorker.OnDoWork(DoWorkEventArgs e)
à Articulate.ComponentModel.STABackgroundWorker.a(Object A_0)</StackTrace>
</ErrorReport>

Anyone could help with ?

Thank you.