title: Right click "new" registry entry exists, but context menu no longer shows it
body: <p>I am running Windows 7. A few months ago I added the following registry key to get a right click "new" option for .tex files</p>
  
  <pre><code>Computer\HKEY_CLASSES_ROOT\.tex\ShellNew
  </code></pre>
  
  <p>with values</p>
  
  <pre><code>(Default)    REG_SZ    (value not set)
  FileName     REG_SZ    C:\Users\myUser\pathToSampleFile.tex
  </code></pre>
  
  <p>and it has been working perfectly. Right clicking and going to the "new" menu gave me the option to create a new .tex file with the desired template.</p>
  
  <p>However, today I uninstalled TeXworks (a text editor for .tex files, if you are not familiar) and the right click "new" option for .tex files disappeared. I thought that it must have deleted the key, but to my surprise the key is <em>still there</em>. I tried removing it and putting it back, rebooting, etc., but boilerplate troubleshooting was ineffective.</p>
  
  <p>Does anyone know why this has happened and/or how to fix it? Thank you very much for your time.</p>
  
  <p>Edit: If I search for "ShellNew" in my registry, there are LOTS of file extensions which have the key, but only a few of them actually appear in my right click menu. I think there must be some master on/off key for which file extensions to look to see if they have a "ShellNew" key, but I don't know where it would be.</p>