This thread may help:

http://tech.groups.yahoo.com/group/flexcoders/message/120115


--- In [email protected], "l_m_sylvester" <[EMAIL PROTECTED]>
wrote:
>
> Hey guys,
> 
> I'm getting an annoying error with an all-AS3 application. I've setup 
> WebOrb .NET as my remoting server, and configured the application to 
> point to that server. However, although I've set up a destination, 
> and assigned the my-amf channel to it, I get return :-
> 
> Destination 'SelectYourSeatDestination' has no channels defined and 
> the application does not define any default channels.
> 
> If I manually add a my-amf channel using :-
> 
> var channelSet : ChannelSet = new ChannelSet();
> var pollingAMF : AMFChannel = new AMFChannel( "my-
> amf", "http://localhost:88/weborb.aspx"; );
> channelSet.addChannel( pollingAMF );
> remoteObject.channelSet = channelSet;
> 
> then I get the error
> 
> Channel.Connect.Failed error Invalid URL url: 'null'
> 
> This is really frustrating. Flex should pick out the destination and 
> associated channels without having to do this. Has anyone else had 
> such problems?
> 
> Thanks,
> Lee
>


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