Hi Sven,

The error "incorrect answer" refers to a syntactic rejection of the response sent to your client, that, at first sight, seems to me correct.
The most likely reason could be that the server to which you are connecting is not a Lightstreamer server.

Otherwise, if the target server is actually a Lightstreamer server, this could not be configured to handle the specific type of client, in your case .NET Client.
Please, could you proceed with checks on the server side?

Regards,
Giuseppe