The original problem is that I'm trying to use SQL CE 4.0 with Entity Framework 5. I have applied the service pack 1, applied different hot fix (as suggested in different forums and blogs).
Now, I've read that SQL Server Compact Toolbox can manage these connections, but when I follow the steps, I get this menu :
Where the two first items should be enabled. My project is a C# WPF project. I've also read (from some post over a year ago) that only Asp.Net projects are supported with this feature (Why??), is this why I get the disabled menu items?