If it's the "not available in your locale" error, I had that too. It seems that iGoogle (and widget which use iGoogle's Open Social framework) are very sensitive about how you access iGoogle.
For instance, the Chess widget doesn't work for me when I log-in to my iGoogle page at http://www.google.ca/ig, but it works fine when I use http://www.google.com/ig (note the .ca and .com in the domain name).
Try the latter. I think I also read somewhere that .co.uk would also work, but I'm not 100% sure.
I've been playing on iGoogle for the past few days now, and all of a sudden. It says it's no longer available in my area. Any help would be much appreciated :)