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Eclipse KB: New projects are not allowed

Issue

Attempts to create or import a project consistently fail stating that a project with the specific name already exists.  However, the project does not appear in the explorer or navigator views.


Cause

The issue is because Eclipse is set to list only a certain set of projects (Working Set).


Solution

The steps to resolve this issue will depend on the "file" view in use.  This means things like an explorer (PHP Explorer for instance) or the Navigator.  There is a downward pointing triangle, most likely along the top right of the view.

  1. View Menu | Select Working Set…
  2. Choose a combination of options

The selection in the second step should probably be Window Working Set or No Working Set.


Environment

Version Eclipse 4.4 Luna (any version that supports working sets)
OS Any
Browser Not applicable


Details

There is no clear indication or any sort of visual cue to make it readily known that the projects in a listing are for a specific set of projects.  Accordingly, it's easy to forget that there are projects being hidden from view.  The problem of trying to inadvertently create a project over one that already exists is perpetuated due to the lack of a more descriptive error notice in the dialog windows.  A simple statement suggesting a look at projects that may be hidden might help mitigate this issue sooner.
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