WSOD with 6.x-2.x-dev

Just downloaded 6.x-2.x-dev and get WSOD due to :
PHP Parse error: syntax error, unexpected '<' in /Applications/MAMP/htdocs/drupal-6.20/sites/all/themes/blueprint/block.tpl.php on line 2

And indeed it seems that line 2 in block.tpl.php (like in most other php templates) is missing ?!
For example block.tpl.php is :

<?php
<div id="block-<?php print $block->module .'-'. $block->delta; ?>" class="<?php print $classes; ?>">

<?php if ($block->subject): ?>
  <h3><?php print $block->subject ?></h3>
<?php endif;?>

  <div class="content"><?php print $block->content ?></div>
  <?php print $edit_links; ?>

</div>

Obviously first php tag is not closed.
Line 2 that normally contains version information and closes also the php tag is missing ?!