I always encounter this problem when I try to download rayfile files. But seems a small file will work (~6M). All others didn't work and showed the messages of "temporarily unavailable" or "plugin error(out of date)",Also I registered on rayfile.com but seems there's no place to enter a premium account information for rayfile. I just have a free one and want to give it a shot. There's no place to enter free account information like megaupload or others.

thank you very much.

If you can't download bigger files from that host with your browser account support might become necessary for jD.

Otherwise the plug-in needs to be updated. This depends on a few example links and a complete and detailed log.