[vitnuce]

Update: User may donate negative amout to other. Replace

    if ($vbulletin->userinfo[$vbulletin->options['icashf']] - $vbuletin->GPC['amount'] < 0){
        eval(standard_error(fetch_error('error_icash_donthave')));
    }

by

    if ($vbulletin->userinfo[$vbulletin->options['icashf']] < $vbulletin->GPC['amount'] ){
        eval(standard_error(fetch_error('error_icash_donthave')));
    }

    if ($vbulletin->GPC['amount'] < 0){
        eval(standard_error(fetch_error('error_icash_donthave')));
    }