Index: core/units/helpers/fck_helper.php
===================================================================
--- core/units/helpers/fck_helper.php
+++ core/units/helpers/fck_helper.php
@@ -534,7 +534,7 @@
 			$styles_css = $this->Application->HREF('index', '_FRONT_END_', $url_params, 'index.php');
 		}
 		else {
-			$stylesheet_folder_url = $this->Application->BaseURL(rtrim(EDITOR_PATH, '/'));
+			$stylesheet_folder_url = $this->Application->BaseURL() . trim(EDITOR_PATH, '/') . '/';
 			$styles_css = $stylesheet_folder_url . 'style.css';
 		}