While tring out your system and moving files from Axiom, images and thumbnails would not be displayed.
After some digging I found the regex for external paths (in yorsh-varval-request_data.inc.php) did not allow a ~. I can not think of a security issue to not include it (I could be wrong.)
It would be nice for you to include it in your next version, or let me know if I have to rename +1000 files.
Thanks for your help,