title: System.Security.Permission Error on Create Forder Method
body: <p>I heve built a Plugin, but for my needs, I have to write all logs on a text file. 
  But on debug mode, I notice that  when thecode step through the following snippet</p>
  
  <pre><code>if (!System.IO.Directory.Exists(_filePath))
              {
                  System.IO.Directory.CreateDirectory(_filePath);
              }
  </code></pre>
  
  <p>it returns me this exception : </p>
  
  <blockquote>
    <p>'System.Security.Permissions.FileIOPermission, mscorlib,
    Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'</p>
  </blockquote>
  
  <p>On filesystem, "everyone" is  granted  on read/write </p>