ucp.php?i=ucp_main&mode=bookmarks DateTime Exception

( ! ) Fatal error: Uncaught exception 'Exception' with message 'DateTime::__construct() [datetime.--construct]: Failed to parse time string (@) at position 0 (@): Unexpected character' in C:\wamp\www\phpbb3-fork\phpBB\includes\datetime.php on line 43
( ! ) Exception: DateTime::__construct() [datetime.--construct]: Failed to parse time string (@) at position 0 (@): Unexpected character in C:\wamp\www\phpbb3-fork\phpBB\includes\datetime.php on line 43
Call Stack

1. Time Memory Function Location
   1 0.0019 885104 {main}

   ( ) ..\ucp.php:0
   2 0.2000 11768296 p_master->load_active( ) ..\ucp.php:347
   3 0.2018 12171272 ucp_main->main( ) ..\functions_module.php:535
   4 0.2051 12775992 ucp_main->assign_topiclist( ) ..\ucp_main.php:434
   5 0.2080 12889504 phpbb_user->format_date( ) ..\ucp_main.php:799
   6 0.2080 12890080 phpbb_datetime->__construct( ) ..\user.php:655
   7 0.2080 12890176 DateTime->__construct( ) ..\datetime.php:43