Formhandler

Validator BetweenValue dont work with minValue = 0 because of incorrect checking of mandatoryParameters in class Tx_Formhandler_AbstractErrorCheck

foreach($this->mandatoryParameters as $param) {
    if(!$this->settings['params'][$param]) {
        $this->utilityFuncs->throwException('error_checks_unsufficient_parameters', $param, $this->settings['check']);
    }
}

should be

foreach($this->mandatoryParameters as $param) {
    if(!isset($this->settings['params'][$param])) {
        $this->utilityFuncs->throwException('error_checks_unsufficient_parameters', $param, $this->settings['check']);
    }
}