title: Tessdata is not being copied in document directory
body: <p>I am using the following method to add the tesseract trained data in my project</p>
  
  <pre><code>- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
  {
      self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
      if (self) {
          // Set up the tessdata path. This is included in the application bundle
          // but is copied to the Documents directory on the first run.
          NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
          NSString *documentPath = ([documentPaths count] &gt; 0) ? [documentPaths objectAtIndex:0] : nil;
  
          NSString *dataPath = [documentPath stringByAppendingPathComponent:@"tessdata"];
          NSFileManager *fileManager = [NSFileManager defaultManager];
          // If the expected store doesn't exist, copy the default store.
          if (![fileManager fileExistsAtPath:dataPath]) {
              // get the path to the app bundle (with the tessdata dir)
              NSString *bundlePath = [[NSBundle mainBundle] bundlePath];
              NSString *tessdataPath = [bundlePath stringByAppendingPathComponent:@"tessdata"];
              if (tessdataPath) {
                  [fileManager copyItemAtPath:tessdataPath toPath:dataPath error:NULL];
              }
          }
  
          setenv("TESSDATA_PREFIX", [[documentPath stringByAppendingString:@"/"] UTF8String], 1);
  
          // init the tesseract engine.
          tesseract = new tesseract::TessBaseAPI();
          tesseract-&gt;Init([dataPath cStringUsingEncoding:NSUTF8StringEncoding], "eng");
      }
      return self;
  }
  </code></pre>
  
  <p><strong>getting the following error</strong></p>
  
  <pre><code>Error opening data file /Users/frf/Library/Application Support/
  iPhone Simulator/6.1/Applications/686F83C8-526C-47FB-9F02-
  E44FBE69F60B/Documents/tessdata/eng.traineddata
  </code></pre>
  
  <p><strong>tessdata is not being copied in document directory . what shall i do ?</strong></p>
  
  <p>please suggest edit my above code ...</p>