Hi Dennis,
I have just tried duplicating a couple of the gallrey types in the galleries folder, once duplicating in DW files panel, and once outside of DW (in case DW was updating paths).
In each case the galleries duplicated fine, with the per/gallery-type index.php maintaining the proper structure in all cases.
<?php if(empty($js_mootools)) { ?>
<script type="text/javascript" src="<?php echo $pg_config['path']; ?>js/mootools-core.js"></script>
<script type="text/javascript" src="<?php echo $pg_config['path']; ?>js/mootools-more.js"></script>
<?php $js_mootools = true; } ?>
<?php if(empty($js_slimbox)) { ?>
<script type="text/javascript" src="<?php echo $pg_config['path']; ?>js/slimbox.js"></script>
<?php $js_slimbox = true; } ?>
<script type="text/javascript" src="<?php echo $pg_config['html_prefix']; ?>js/gallery.js"></script>
Transferring the new (duplicated galleries) and choosing one of those designs, and selecting 'Add to Page' produced the right code for the include, so I'm not sure what glitch messed with yours.
FWIW I'm using latest verion of PG (whether or not that would make any difference!)
Anyway, - glad you got the page sorted and customised!
Cheers