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Which URL are you using to access your pages?
Could you post your PushPage and LightstreamerEngine initialization code?

If so I assume that your LSHost and domain settings are equals.
If you can you should change the hostname or the domain in a way that they look different.

eg:
domain - lightstreamer.com
LSHost...

Hi,

Are your pages deployed on an external web server (ie not in Lightstreamer internal web server)?
Which kind of structure has your application (frames-single frame-iframes)?
Please take a...