I too am seeing the same error. I've tried rebooting but no help. Like Tom suggested, I had created a new custom Ancestry link in WebSearch, and that works for some things, but not all. I'm leaving my TreeShare settings alone because I do not want to have to recreate the tree. Also, if I go directly to Ancestry, no problems, so it is not something to do with my Ancestry account. Hope RM gets this fixed quick.