phpBB : Critical Error

Could not connect to the database

DEBUG MODE

SQL Error : Error PHP Warning: odbc_connect() [function.odbc-connect]: SQL error: [Microsoft][ODBC Microsoft Access Driver] Could not use '(unknown)'; file already in use., SQL state S1000 in SQLConnect in E:\web\merchanttra\htdocs\SupportForum\db\msaccess.php on line 55