After installing build 2144 and working a little bit it seems to be broken for me. Nearly every mouseclick triggers dozens of exceptions. R# code analysis is not working (no syntax highlighting, no ticks on the right side, refactoring disabled...). Im working on a small test solution with a VB and two C# projects. The two C# projects implement a data access layer via NHibernate. They are are nearly identical (same classnames with different functionality, but different namespaces) except that one project uses classic NHibernate XML mapping and the other one uses the FluentNhibernate library. There are tons of exceptions i've reported to YouTrack (starting with RSRP-260058). I have attached my solution to help you investigating the problem.