OK....Now what?

Your blog server returned the following error message:
com.pyra.blogger.api.AppkeyNotValid Exception: InvalidAppKeyException: Either this appkey isn't registered or you sent a null appkey.

Now it appears I can't use Bloggar to post? Moveable Type is starting to look more and more promising! Currently I am using the blogger interface that seems to take forever to load and do anything with, compared to Bloggar. ARRRGGGHHHH! I'm sure I will be more cheerful soon, sorry!