title: the type or namespace name could not be found (Reference present)
body: <p>After I build a few of my references, which are present in the project and accessible through intellisense before the build is performed.</p>
  
  <p>Unfortunately none of my projects are set to target Client Profile, as answered in this thread.
  <a href="https://stackoverflow.com/questions/4764978/the-type-or-namespace-name-could-not-be-found">The type or namespace name could not be found</a></p>
  
  <p>This seems to be the most common cause, does anyone know what else other than this can cause the same issue?</p>
  
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  <p>Edit:
  The Types that aren't found are all from the referenced DLLs. I have the correct using directives for these and they are present in the resource folder, however they become underlined red after a build (I did try cleaning to).
  My initial thought was the framework (the project is on v3.5), but I checked all my resources working or otherwise all where on v2 bar a few (working ones) on v4 which I removed temporarily to make sure we're causing issues.</p>
  
  <p>Unable to access the project from my current location but will post any requested specifics as soon as I can.</p>
  
  <hr>
  
  <p>edit:
  Resolved the issue by deleting all of the custom class libraries... found and rebuilt each of their projects then added the new DLLs back into the project. Stored libraries weren't very organised, so I probably have some confliction between old/new versions.</p>