Parse error: syntax error, unexpected ‘.’

I have followed the instructions up to running wp-admin/install.php and I get the following error:

Parse error: syntax error, unexpected ‘.’ in F:\hshome\robertc\digitaleye.ie\wp-includes\category-template.php on line 523

I have downloaded wordpress again extracted that file and reloaded it but get the same error. Here is what the code looks like:

function wp_tag_cloud( $args = ” ) {
$defaults = array(
‘smallest’ => 8, ‘largest’ => 22, ‘unit’ => ‘pt’, ‘number’ => 45,
‘format’ => ‘flat’, ‘orderby’ => ‘name’, ‘order’ => ‘ASC’,
‘exclude’ => ”, ‘include’ => ”, ‘link’ => ‘view’, ‘taxonomy’ => ‘post_tag’, ‘echo’ => true
);

Any suggestions what the problem might be?