VoiceXML UCMA部署到服务器时出错

我已将示例项目部署到没有任何音频设置的Windows 2008虚拟服务器。我已经安装了UCMA 3.0运行时。此应用程序在Windows 7 64位开发笔记本电脑上运行。我收到以下异常。

    Error: Recognizer setting not supported by recognizer.
    Stacktrace:    at Microsoft.Speech.Internal.SapiInterop.SapiRecognizer.SetProperty(ISpRecognizer sapiRecognizer, String name, Object value)
                   at Microsoft.Speech.Internal.SapiInterop.SapiRecognizer.<>c__DisplayClass1.<SetPropertyNum>b__0()
                   at Microsoft.Speech.Recognition.SpeechRecognitionEngine.UpdateRecognizerSetting(String settingName, Int32 updatedValue)
                   at Microsoft.SpeechServer.Core.SpeechRecognizer..ctor(ICallProxy callProxy)
                   at Microsoft.SpeechServer.Core.TelephonySession..ctor(ICallProxy callProxy)
                   at Microsoft.SpeechServer.Core.ApplicationHost..ctor(ICallProxy callProxy, Uri vxmlUrl)
                   at Microsoft.Speech.VoiceXml.Browser.RunWorker()
                   at Microsoft.Speech.VoiceXml.Browser.Run(Uri vxmlPage, CookieContainer container)

从这段代码中发生这种情况：

InitializeVoiceXmlBrowswer();

var helloWorldUri = new Uri(new Uri(Environment.CurrentDirectory + "\"), "HelloWorld.vxml");

VoiceXmlBrowser.SetAudioVideoCall(call);

VoiceXmlResult voiceResult = VoiceXmlBrowser.Run(helloWorldUri, null);