I retrieve the article from an alias path using treeHelper.GetDocuments method; this method works fine except for one case:
In my page i use a standard login user control; when i log in correctly and my user control reloads the page, the call to the external API raises the following exception : "{Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack.}

in all other cases it works fine.
Do you have any idea how to resolve it?

thanks
Regards.