glad you saved your Tiki, I know at least 2 people (first being me) that also had a similar problem. Thank you for reporting your problem. I'd ask you to check this against
This doesn't talk about same error msg so there are good chances I'm making you lose your time, but it's pretty strange how the solution both of you found is the same.
Concretely I'm asking you to try logging in again after closing your browser (and probably deleting cookies?).
I'll ask damian more about the fix he's talking about.