Not surprising it's not working with safe mod on. You can try to cheat it - delete and re-create 'pics' folder with a script. You need something like this (e.g. md.php in gallery root folder):
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If your plugin root is not writeable than you should see another warning while installing Lightview widget - Can't copy lightview.bb Copy lightview.bb (and lightbox.bb if you have used lightbox once) f...
