TypeKey isn't matching up the weblog URL that you entered there with your weblog's actual URL.
Without knowing your actual weblog URL and what URL you entered in TypeKey, it's hard to give specific suggestions on what you should do.
Some suggestions that have worked for other people:
1) Make sure URL entered at TypeKey's web site has a trailing slash (i.e.
http://www.mydomain.com/).
2) Use the root domain of your weblog instead of a full path if your weblog is not at the root of your domain. Example: If your weblog is at
http://www.mydomain.com/blog/, use
http://www.mydomain.com/ in TypeKey.
3) Try using the CGIPath you used in mt.cfg. Example:
http://www.mydomain.com/cgi-bin/.
QUOTE
Are we even allowed to talk about 3.0 here? It seems this forum is sadly dying - this is a major tragedy!!!
Of course it is allowed to talk about 3.0 here. A large percentage of the questions asked and answered here currently are about 3.0. The traffic here in the forums is less than what it has been in the past, but I wouldn't say that it's dying. With the release of 3.0, paid MT users now can open help tickets and get assistance directly from Six Apart rather than having to post their questions here.