The following from Jeremy cured both the cookie error and the other problem in the post. Try it folks. It worked for me.
http://ww.wp.xz.cn/support/topic/137196?replies=3
Thread Starter
cmkuk
(@cmkuk)
What a star!! It’s cured both problems. Many thanks for that Jeremy.
Running 2.1.3 and getting the same error. Both IE and FF are cookie enabled.
Help.