WP 1.5 and xmlrpc trackbacks (with MarsEdit)

Hi. Great job on WP 1.5 ! Already upgraded and it’s fine.

I’m using MarsEdit to post via xmlrpc (awesome app BTW and much better than ecto IMHO). Whenever I place a trackback into the application, I keep getting an xmlrpc parsing error :

XML-RPC reply received: 2005-02-17 08:51:45 -0800
URL: https://www.withheld!.com/blog/xmlrpc.php
Method name: metaWeblog.editPost
Status code: 200
Succeeded: NO
--Parse Error--
Parse Error Title: XML-RPC Response Parsing Failed
Parse Error Message: The XML parser could not parse the data.
Response text:
<br />
<b>Warning</b>: array_unique(): The argument should be an array in <b>/home/my_home_dir/public_html/blog/wp-includes/functions-post.php</b> on line <b>160</b>

Any ideas ? The post seems to work fine via xmlrpc when I post without the trackback.

Manually entering the trackback into the web interface after uploading via xmlrpc (sans trackback) seems to work as well (though it has no appeared on the 1.5 Changes page yet).

Any ideas ? Searched but didn’t find anything in the support forums here.

ciao !
Daryl.