If you have not yet run the S1.2 installer you can make this edit to repair the bug before running the installer. Then the installer will correctly install all tables.
FIND in mk_install.php
$query106="
CREATE TABLE `{$tblprefix}links` (
`id` int(10) NOT NULL auto_increment,
`name` varchar(60) NOT NULL default '',
`image` varchar(20) NOT NULL default '',
`url` varchar(255) NOT NULL default '',
`groups` varchar(255) NOT NULL default '',
PRIMARY KEY (`id`)
)";
$DB->query($query107);
$query106="
CREATE TABLE IF NOT EXISTS `{$tblprefix}rss` (
`id` int(10) NOT NULL auto_increment,
`name` varchar(40) NOT NULL default '',
`url` varchar(255) NOT NULL default '',
`position` int(3) 1,
`active` tinyint(1),
PRIMARY KEY (`id`)
)";
$DB->query($query107);
REPLACE WITH:
$query106="
CREATE TABLE `{$tblprefix}links` (
`id` int(10) NOT NULL auto_increment,
`name` varchar(60) NOT NULL default '',
`image` varchar(20) NOT NULL default '',
`url` varchar(255) NOT NULL default '',
`groups` varchar(255) NOT NULL default '',
PRIMARY KEY (`id`)
)";
$DB->query($query106);
$query107="
CREATE TABLE IF NOT EXISTS `{$tblprefix}rss` (
`id` int(10) NOT NULL auto_increment,
`name` varchar(40) NOT NULL default '',
`url` varchar(255) NOT NULL default '',
`position` int(3) 1,
`active` tinyint(1),
PRIMARY KEY (`id`)
)";
$DB->query($query107);