I've had exactly the same problem for 2 days. There was no problem before.
Ancestry support couldn't come up with an answer. They sent an email with more things to try.
I have tried them all, for example, re-installing the app, changing password on the Ancestry website, but nothing works.
I'm now stuck apart from contacting Support again. Anyone found a solution?
iPad2, iOS 5.1.1
I have had exactly the same problem for 4 days now. It all worked fine for several months before then. "an error has occurred" upon startup - what an insightful message! Cannot login either.
I spoke with Ancestry support today and they said it is a known problem but that it is Apple's problem. They claim the app contacts Ancestry and then contacts Apple and that is where it is failing. Huh? They may be right but to this non techhie it sounds like a case of "pass the buck". I can just imagine how interested Apple is to try and sort this out.
Uninstall and reinstall does nothing. Any help gratefully received!
iPad 3rd generation, Wifi and cellular, iOS 5.1.1
Thanks for this extra information. You have tried everything I have. I wonder if the problem started for all of us at the same time.
It's ironic that I can log on to Ancestry from my iPad2 using the Internet in the normal way and view my tree that way, but the app has advantages. I can't see what else I can do. You got more from Ancestry Support than i did.
I might try Apple Support if there is someone at the end of a phone somewhere.