Program: 34156
Project: 34156
Buggy source:
@Override protected String doInBackground(String... urls){
  for (  String url : urls) {
    try {
      ArrayList<Cookie> cookies=new ArrayList<Cookie>();
      Drawable drawable=null;
      if (evercamCamera.camera.hasCredentials()) {
        Log.d(TAG,"String_Node_Str" + evercamCamera.getCameraId() + "String_Node_Str"+ url);
        drawable=Commons.getDrawablefromUrlAuthenticated1(url,evercamCamera.getUsername(),evercamCamera.getPassword(),cookies,15000);
      }
 else {
        Log.d(TAG,"String_Node_Str" + evercamCamera.getCameraId());
        Camera camera=evercamCamera.camera;
        if (camera != null) {
          InputStream stream=camera.getSnapshotFromEvercam();
          drawable=Drawable.createFromStream(stream,"String_Node_Str");
        }
      }
      if (cookies.size() > 0) {
        evercamCamera.cookies=cookies;
      }
      try {
        String extCachePath=context.getExternalFilesDir(null) + "String_Node_Str" + evercamCamera.getCameraId()+ "String_Node_Str";
        File extfile=new File(extCachePath);
        if (drawable != null) {
          Bitmap bitmap=((BitmapDrawable)drawable).getBitmap();
          if (extfile.exists()) {
            extfile.delete();
          }
          extfile.createNewFile();
          FileOutputStream fos=new FileOutputStream(extfile);
          bitmap.compress(CompressFormat.PNG,0,fos);
          fos.close();
        }
      }
 catch (      Exception e) {
        Log.e(TAG,Log.getStackTraceString(e));
      }
      String pathString=context.getCacheDir() + "String_Node_Str" + evercamCamera.getCameraId()+ "String_Node_Str";
      File file=new File(pathString);
      if (drawable != null) {
        Bitmap bitmap=((BitmapDrawable)drawable).getBitmap();
        if (file.exists()) {
          file.delete();
        }
        file.createNewFile();
        FileOutputStream fos=new FileOutputStream(file);
        bitmap.compress(CompressFormat.PNG,0,fos);
        fos.close();
      }
      if (file.exists() && file.length() > 0) {
        return pathString;
      }
 else       if (file.exists()) {
        file.delete();
        Log.e(TAG,"String_Node_Str" + "String_Node_Str" + "String_Node_Str" + evercamCamera.getCameraId() + "String_Node_Str"+ evercamCamera.getName()+ "String_Node_Str");
        return null;
      }
 else {
        Log.e(TAG,"String_Node_Str" + "String_Node_Str" + "String_Node_Str" + evercamCamera.getCameraId() + "String_Node_Str"+ evercamCamera.getName()+ "String_Node_Str");
        return null;
      }
    }
 catch (    OutOfMemoryError e) {
      Log.e(TAG,e.toString() + "String_Node_Str" + Log.getStackTraceString(e));
      return null;
    }
catch (    Exception e) {
      Log.e(TAG,e.toString());
    }
  }
  return null;
}

Fixed version (ground truth):
@Override protected String doInBackground(String... urls){
  for (  String url : urls) {
    try {
      ArrayList<Cookie> cookies=new ArrayList<Cookie>();
      Drawable drawable=null;
      if (evercamCamera.hasCredentials()) {
        drawable=Commons.getDrawablefromUrlAuthenticated1(url,evercamCamera.getUsername(),evercamCamera.getPassword(),cookies,15000);
      }
 else {
        Camera camera=Camera.getById(evercamCamera.getCameraId());
        if (camera != null) {
          InputStream stream=camera.getSnapshotFromEvercam();
          drawable=Drawable.createFromStream(stream,"String_Node_Str");
        }
      }
      if (cookies.size() > 0) {
        evercamCamera.cookies=cookies;
      }
      try {
        String extCachePath=context.getExternalFilesDir(null) + "String_Node_Str" + evercamCamera.getCameraId()+ "String_Node_Str";
        File extfile=new File(extCachePath);
        if (drawable != null) {
          Bitmap bitmap=((BitmapDrawable)drawable).getBitmap();
          if (extfile.exists()) {
            extfile.delete();
          }
          extfile.createNewFile();
          FileOutputStream fos=new FileOutputStream(extfile);
          bitmap.compress(CompressFormat.PNG,0,fos);
          fos.close();
        }
      }
 catch (      Exception e) {
        Log.e(TAG,Log.getStackTraceString(e));
      }
      String pathString=context.getCacheDir() + "String_Node_Str" + evercamCamera.getCameraId()+ "String_Node_Str";
      File file=new File(pathString);
      if (drawable != null) {
        Bitmap bitmap=((BitmapDrawable)drawable).getBitmap();
        if (file.exists()) {
          file.delete();
        }
        file.createNewFile();
        FileOutputStream fos=new FileOutputStream(file);
        bitmap.compress(CompressFormat.PNG,0,fos);
        fos.close();
      }
      if (file.exists() && file.length() > 0) {
        return pathString;
      }
 else       if (file.exists()) {
        file.delete();
        Log.e(TAG,"String_Node_Str" + "String_Node_Str" + "String_Node_Str" + evercamCamera.getCameraId() + "String_Node_Str"+ evercamCamera.getName()+ "String_Node_Str");
        return null;
      }
 else {
        Log.e(TAG,"String_Node_Str" + "String_Node_Str" + "String_Node_Str" + evercamCamera.getCameraId() + "String_Node_Str"+ evercamCamera.getName()+ "String_Node_Str");
        return null;
      }
    }
 catch (    OutOfMemoryError e) {
      Log.e(TAG,e.toString() + "String_Node_Str" + Log.getStackTraceString(e));
      return null;
    }
catch (    Exception e) {
      Log.e(TAG,"String_Node_Str" + Log.getStackTraceString(e));
    }
  }
  return null;
}