I am having the same issue. It started last night. It doesn't matter if it is 180 or Billion Uploads, I will get the "File Not Found" error when attempting to download episodes. I don't ever stream because it has never seemed to work right.
I don't know if either 180 or Billion has limits as to how much you can download at a time, but it is an intermittent problem.
Here is one link where it is doing it right now: http://www.icefilms.info/ip.php?v=13011&
- Tudors S02E08
I have cleared my caches, deleted all cookies and restarted my computer multiple times. I have the most up-to-date of everything else and have not changed anything with my system in the past month that could've caused this.
(as a side note, ShareBees isn't even opening a webpage anymore. Are they completely down??)