title: Weird Visual Studio 2010 Behavior - not copying dlls to bin
body: <p>I hope someone else has encountered this because its driving me batty.</p>
  
  <p>I recently got a new laptop so I've been setting up my Visual Studio solutions (VS2010 with .NET 4.0) that I saved off my old machine. One of them is a simple console app that I use to simulate some things for testing. It references 2 assemblies that I have in another solution that I am working on now. This used to all work fine as expected but ever since moving to the new machine I get the dreaded "The type or namespace name 'YourAssembly' could not be found (are you missing a using directive or an assembly reference?" error message. The references are clearly shown in the Visual Studio but when the project builds it does not copy them to the bin directory which explains the message. Initially I was just referencing the dlls the way I would any 3rd party dll but I even tried removing that and including the project files in my solution and referencing them that way and still it fails. I've verified that the dlls have their 'Copy Local' property set to true and they do. Its really bizarre because the project references several other dlls that are just 3rd party assemblies (for example NLog, GData, etc) and those all copy over fine but not these two for some strange reason.</p>
  
  <p>Here's one more piece of oddness. If I add some code to the console app that references my assemblies it says it can't find it. If I then re-add the assemblies to the references, the error disappears until I try to build it again and then it returns. Is this a VS bug or what? I've never seen this kind of odd behavior before.</p>
  
  <p>thanks</p>