Ich habe das Problem selbst gelöst. Habe folgenden Code in realurl/ext_localconf.php geschrieben, obwohl dieser in typo3conf/localconf.php gehört.
Code:
$TYPO3_CONF_VARS['EXTCONF']['realurl'] = array(
'_DEFAULT' => array(
'init' => array(
'enableCHashCache' => 1,
),
'preVars' => array(
array(
'GETvar' => 'no_cache',
'valueMap' => array(
'no_cache' => 1,
),
'noMatch' => 'bypass',
),
),
'fileName' => array (
'index' => array(
'print.html' => array(
'keyValues' => array (
'print' => 1,
'no_cache' => 1,
)
),
'_DEFAULT' => array(
'keyValues' => array(
)
),
),
),
'pagePath' => array(
'type' => 'user',
'spaceCharacter' => '-',
'userFunc' => 'EXT:realurl/class.tx_realurl_advanced.php:&tx_realurl_advanced->main',
'languageGetVar' => 'L',
'expireDays' => 30
),
);