I have developed an Add-In of type Tool, which on click opens a new tab in the browser, containing the page of the given URL. E.g.: http://hotmail.com/ or http://google.com/ etc. Till this point NO PROBLEM.
BUT when I want to open the view (xaml) which is a part of the developed Add-In tool, I have the problem that I can not load a xaml from of another xap from Viewer.xap.
This might be because Viewer.xap is a precompiled in the project and I can not add any refernce to the Add-Inn? I am trying to open the browser tab with a hyperlink. The URL should look like : /Extensions/AddIns.MyAddIn;component/MyView.xaml"
Somehow, xap should open another xap, in this case, the first one is a closed source code.
This could be a Silverlight issue. Security related.
Else, why don't you try to open a html page similar to the index.htm page for the applications. Just change the page to reference a different xap file (not viewer.xap but your own)