Facebook - serverfbml form action must be within the application's connect url -

I'm not sure, I'm using a pretty standard piece of code for Facebook. It sends a request to people about my application. Suddenly I am getting this error:

The server must be within the active URL of the form action application

Do you use one or the other The problem is happening: fb: serverfbml

fb: request-form

fb: req-choice

fb: multi-friend-selector

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Thanks!

The same issue to me .. I used the canvas URL in the summary page and it worked. You can try it out