Index: branches/RC/core/units/admin/admin_tag_processor.php
===================================================================
diff -u -N -r11705 -r11721
--- branches/RC/core/units/admin/admin_tag_processor.php	(.../admin_tag_processor.php)	(revision 11705)
+++ branches/RC/core/units/admin/admin_tag_processor.php	(.../admin_tag_processor.php)	(revision 11721)
@@ -800,8 +800,8 @@
 				$style =  $this->Conn->GetRow('SELECT * FROM '.TABLE_PREFIX.'Skins WHERE IsPrimary = 1');
 			}
 
-			$css_path = (defined('WRITEABLE') ? WRITEABLE : FULL_PATH.'/kernel') . '/user_files';
-			$css_url = $this->Application->BaseURL(defined('WRITEBALE_BASE') ? WRITEBALE_BASE : '/kernel') . 'user_files/';
+			$css_path = (defined('WRITEABLE') ? WRITEABLE : FULL_PATH. DIRECTORY_SEPARATOR . 'kernel') . DIRECTORY_SEPARATOR . 'user_files';
+			$css_url = $this->Application->BaseURL(defined('WRITEBALE_BASE') ? str_replace(DIRECTORY_SEPARATOR, '/', WRITEBALE_BASE) : '/kernel') . 'user_files/';
 
 			$type = array_key_exists('type', $params) ? $params['type'] : false;
 			if ($type == 'logo') {