When you have installed the latest LINQ preview and have installed the Language Service, you wil notice that all of a sudden all the smart tags and refactoring commands stop working.
The first time I solved this by reinstalling VS (somewhat harsh and time consuming :-)) It turns out that you also kan have both LINQ and smart tags by fixing a registry key:
- Start up RegEdit.exe
- Open HKEY_LOCAL_MACHINE\Software\Microsoft\VisualStudio\8.0\Packages\{A066E284-DCAB-11D2-B551-00C04F68D4DB}\SatelliteDLL
- Edit the "Path" value and change it from "C:\Program Files\Microsoft Visual Studio 8\VC#\VCSPackages\1033\" to "C:\Program Files\Microsoft Visual Studio 8\VC#\VCSPackages\"
- Then run devenv /setup /resetuserdata /resetsettings
This tip was originally posted on the Microsoft Linq forum.