I'm trying to debug my LINQ provider. I wanted to go through Queryable code inside System.Core. But when I add System.Core 4.0 in Assemblies to Debug list and run tests I see following message:

(
http://picasaweb.google.ru/lh/photo/19P ... directlink)
And "Step Into F11" doesn't work.
(http://picasaweb.google.ru/lh/photo/19P ... directlink)
And "Step Into F11" doesn't work.