How can i deploy a silverlight application when it contains an aspx page (And Aspx page content is a DevExpress Scheduler)

I have a silverlight application. It has containing many navigation pages in it. One of this pages is containing an .aspx page and i have used devexpress scheduler on there. It is working perfect on development machine but on production machine when client logged and navigate to the scheduler page there is a message top of the page saying

webbrowser is enabled only for out-of-browser applications running with elevated permissions in Internet Explorer.

And i have found something like that

https://msdn.microsoft.com/en-us/library/gg192793(v=vs.95)

But I think my problem is not that in my project properties i always checked the require permission checkbox. i couldnt understand this behavior and how can i solve. I tryed to use .pfx file by adding in project properties signing tub. Even i couldnt understand how why are we using this certificate and is it interesting with it

Also now i seen in my development machine when i opened this page a popup window come up this message:

the current webpage is trying to open a site in your trusted sites list. Do you want to allow this?

current site: res/npctrUI.dll
Trusted site: localhost

warning allowing this can expose your computer to security risk. If you dont trust the current page, choose no.

regards

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Hamit YILDIRIM