I can see the image from my PC.
It doesn't seem to be a Lightstreamer-related issue, but rather a typo in the Data Adapter.
Please log the events as they are produced by the Remote Server while your page is being populated.
You can have the Remote Server log the update events sent to Lightstreamer by setting as DEBUG the "Lightstreamer.DotNet.Server.RequestReply" logging category. If you deployed your Remote Server as in our example, you can find the default configuration of the Remote Server log in the "DotNetServer.exe.config" file, beside the "DotNetServer.exe" executable; the currently configured log file is "DotNetServer.log".