[TYPO3-english] Error install mm_forum

[Juan barreto]

Hello,
 i need to install the extension mm_forum, but not work.

Error in fronend:
PHP Catchable Fatal Error: Argument 1 passed to
t3lib_cache_backend_DbBackend::__construct() must be an array, null given in
/var/www/html/demo/t3lib/cache/backend/class.t3lib_cache_backend_dbbackend.php
line 61


Error in the installation:
ERROR: Query could not be parsed: "SQL engine parse ERROR: No ) parenthesis
in list: near "(), UNIX_TIMESTAMP(), 0, 0, 0, ':D' , 'icon_"". Query:
"INSERT INTO tx_mmforum_smilies (uid, pid, tstamp, crdate, cruser_id,
deleted, hidden, code, smile_url, emoticon) VALUES ( 1, 0, UNIX_TIMESTAMP(),
UNIX_TIMESTAMP(), 0, 0, 0, ':D' , 'icon_biggrin.gif', '');"

What do i can to do?

Thanks

-- 
Juan Carlos Barreto
Lider en Área de Servicios
Ing en Sistemas
Universidad del Valle
Tel: 311 750 0420
juank01 at gmail.com
jcbarreto at vianet.ws