title: NERDTree gives error "x file(s) could not be loaded into the nerdtree"
body: <p>I have been using NERDTree and vim/gvim on Windows (currenlty on Windows 10) for a while with this error mentioned in the title continually popping up. Whenever I open a new instance of vim/gvim and open up NERDTree I get the error "3 file(s) could not be loaded into the nerdtree". Generally, when I open gvim it defaults to my C:\Users\USERNAME folder which has led me to believe that there is some file in that folder that is causing the problem. The issue only occurs when NERDTree is opened for the first time in the particular instance of gvim/vim. The issue also occurs in other folders. When opening NERDTree for the first time in my "C:\" directory I get "2 file(s) could not be loaded into the nerdtree" as well. </p>
  
  <p>This issue is quite annoying as in gvim it hangs for a few seconds. As a perfectionist, I would prefer to solve the problem. </p>
  
  <h1>Some previous troubleshooting:</h1>
  
  <p>A google search results in an <a href="https://github.com/scrooloose/nerdtree/issues/265" rel="noreferrer">issue post</a> on the NERDTree github page where the user had a somewhat related issue. The last post on the page recommended opening vim with sudo, as the issue may be due to ownership permissions. I have tried opening gvim as administrator and still get the same problems. Notably, when opening NERDTree I see the NTUSER.DAT files (including ntuser.dat.log, ntuser.ini) and similar. So I thought the problem could be with these files, so I have included them in the ignore variable in my vimrc as shown below</p>
  
  <pre><code>let NERDTreeIgnore = ['\~$','\.pyc$','\*NTUSER*','\*ntuser*','\NTUSER.DAT','\ntuser.ini']
  </code></pre>
  
  <p>This had worked well in hiding the files in my NERDTree window but I still get the error message.</p>
  
  <p>Any ideas on how I might identify the problem files and solve this issue completely?</p>