title: VS 2015 Error “Object reference not set to an instance of an object” when creating a new project or opening a project?
body: <p>Environment：WIN 10 Pro
  IDE:Visual Studio 2015 Community</p>
  
  <p>When I tried to create a project or open projects,the VS would warn that"Object reference not set to an instance of an object".Andreading the System Log，I found this recording:</p>
  
  <pre><code>Faulting application name: devenv.exe, version: 14.0.23107.0, timestamp: 
  0x559b7ead
  
  Faulting Module Name: unknown, Version: 0.0.0.0, time stamp: 0x00000000
  
  Exception code: 0x80131623
  
  Error offset: 0x161c5b8e
  
  Error Process ID: 0x159c
  
  Faulting application start time: 0x01d109944863532a
  
  Faulting application path: D: \ CODESOFT \ Common7 \ IDE \ devenv.exe
  
  Error module path: unknown
  
  Report ID: 71d54c89-2d77-4994-9fac-0d30bd06b3d8
  
  Error package Full name:
  
  Error package relative to the application ID:
  </code></pre>
  
  <p>Although I spent many times searching in Google or any other websites and trying different ways to solve this question,but now the question is still exists.</p>