I seem to have a similar problem to Jaakko (comment number 20 here [1]) in using the Blogging bundle with ExpressionEngine. I'm pretty sure that I've got the endpoint URL (MetaWeblogAPI) and the credentials right, because the same ones work fine from MarsEdit. I get the following error when I try to fetch posts:

"Error retrieving posts. Check your configuration and try again."

Curiously, if I try to load the endpoint URL in a browser, I get the following error:

"faultCode 105 faultString XML error: Invalid document end at line 1"

but as I said, I can post from MarsEdit without any problem. Has anyone had any success using the Blogging bundle with ExpressionEngine?

cheers,

Jackie

[1] http://macromates.com/blog/archives/2006/06/19/blogging-from-textmate/