为什么在.net中用MediaService控件会蓝屏？ KMODE_EXCEPTION_NOT_HANDLED

我的代码是这样的，不知道是不是我代码的错误，希望大家帮帮忙，谢谢。
NSChannelMgrObjClass station=new NSChannelMgrObjClass();
station.Connect("localhost");
IMCMChannel newChannel=station.Channels.Open(channelName,MCMPEERACCESS.MCM_PA_WRITE);
newChannel.DeliveryMode=MCMDELIVERYMODE.MCM_DM_SESSIONLESS_3PH;
System.Random randNum=new System.Random();
newChannel.MulticastAddress=strChannelMulticastAddress;
newChannel.Port=(int)channelPort;
newChannel.NSCURL="http://10.10.106.146/Channels/"+channelName+"/"+channelName+".nsc";
newChannel.ChannelFormats.Add(channelsPath+"\\AllFormats.asd",MCMCHFORMATTYPE.MCM_ASD_CH_FORMAT_FILE);
newChannel.WriteNSC(channelsPath+"\\"+channelName+"\\"+channelName+".nsc",true);