Warning messages fix:

Warning: array_keys() expects parameter 1 to be array, null given in ...\Ftp.php on line 44
Warning: Invalid argument supplied for foreach() in ...\Ftp.php on line 45
Now the last and only form of ftp-connection forms can't delete any more. This will solve this problem.

application/controllers/ConfigController.php

@@ -268,11 +268,13 @@ class ConfigController extends Zend_Controller_Action
     {
         $index = (int)$this->_request->getPost('param');
         $ftpConfig = $this->view->config->get('config.ftp');
+        if (count($ftpConfig) > 1) {
             if (isset($ftpConfig[$index])) {
             	unset($ftpConfig[$index]);
            	 	sort($ftpConfig);
         	}
         	$this->view->config->set('config.ftp', $ftpConfig);
+        }
         $this->_forward('index');
     }