title: Isolated storage operation not permitted on IsolatedStorageFileStream all of a sudden
body: <p>I completed this part of my project some weeks ago and it worked perfectly. Having moved to another part I didn't even touch the previous code at all. All of a sudden I can't even open a txt file using isolatedstorage. All I get is this 'operation not permitted' exception. </p>
  
  <pre><code>string fileSource = "Favorites.txt";
  
          using (IsolatedStorageFile myFile = IsolatedStorageFile.GetUserStoreForApplication())
          {
              using (StreamReader reader = new StreamReader(new IsolatedStorageFileStream(fileSource, FileMode.Open, FileAccess.Read, FileShare.Read, myFile)))
              {
                  while (reader.Peek() != -1)
                      myList.Add(reader.ReadLine());
                  reader.Close();
              }
          }
  </code></pre>
  
  <p>I get the same exception with every part of my code that uses isolatedstorage. The above one is just a small part of it. I close my writers/readers on everyting also.</p>