title: How to solve false "EF Power Tools: modelEntityContainerName contains characters that are not valid"?
body: <p>I'm facing an issue that many already faced, with a difference: neither the SDF file name, or the path, contains invalid characters.
  I've even tried with the Northwind.sdf file and Ikeep getting the same issue.</p>
  
  <p>And example of a full path: D:\Sviluppo\dotnet\EnergiaClima\EnergiaClimaWindows\App_Data\Northwind.sdf</p>
  
  <p>The error message:</p>
  
  <pre><code>System.ArgumentException: The modelEntityContainerName parameter 'D:\Sviluppo\dotnet\EnergiaClima\EnergiaClimaWindows\App_Data\NorthwindsdfContext' contains characters that are not valid.
     at System.Data.Entity.Design.EntityModelSchemaGenerator..ctor(EntityContainer storeEntityContainer, String namespaceName, String modelEntityContainerName)
     at Microsoft.DbContextPackage.Handlers.ReverseEngineerCodeFirstHandler.ReverseEngineerCodeFirst(Project project)
  </code></pre>
  
  <p>This issue is driving me crazy: does the EF Power Tools Beta 3 actually works in VS2010?
  If not, what's the best (and easier) way to get an Entity Model from a SQLCE4.0 DB (something that is not creating a 3.5 DB and editing XML files, if possible)?</p>
  
  <p>I can't understand why SQLCE4.0 support is so poor.</p>