Hi. If this is a known bug please delete. I tried searching but couldn't find it posted.
To replicate add a file to a virtual feed that contains a | and you'll get a java exception that states it can't download. Its easily remedied by renaming the file. Small annoyance.
Thanks.
I couldn't find that in the bug list, but I created one - http://mantis.snoggdoggler.com/view.php?id=1303
Thanks for reporting the problem.