Yeah, I noticed this too, yesterday. Looking on their forum this seems to have been a recurring problem for the last few weeks, no doubt they are trying to resolve the problem soon. I have tried several friends' collections and all seem to have this problem. So we will have to wait.
I just tried uploading my collection again but no joy.
Thor is right. This has been going on for weeks and weeks and weeks and weeks. It works for a bit, then you get the error messages again. Oh well, at least I know what I've got even if nobody else does It's annoying when I want to access my collection while at work or a mate's house though