[wp-hackers] 2.1 RPC-Client Breakages?

[Peter Westwood]

On Wed, December 6, 2006 2:03 pm, Computer Guru wrote:
> Speaking of 2.1 plugin compatibility, is anyone aware of any broken
> compatibility with the XML RPC Server for WordPress in the 2.0 to 2.1
> jump?
>
> For the past couple of months I've either cut & paste HTML into the post
> form or used it directly, so I'm not sure... I just tried to post an entry
> from BlogJet - which worked fine with 2.1 in the past - and received this
> error:
>
> ---------------------------
> Posting Error
> ---------------------------
> Error posting to blog:
>
>
>
> Invalid payload received from xml-rpc server.
>
> Please check your Host and Page settings for this account.
>
>
>
> Server said:
>
> "<br />
> <b>Warning</b>:  call_user_func_array() [<a
>
> href='function.call-user-func-array'>function.call-user-func-
>
> array</a>]: First argument is expected to be a valid callbac..."
> ---------------------------
> OK
> ---------------------------
>
> I didn't want to bug it on Trac without knowing for sure whether or not
> its
> WP-Core 2.1 or one of my plugins/hacks/modifications that's causing this.
>

I don't think this would be a core issue but it may be -
call_user_func_array is used in the following general areas in 2.1 -
Calling Plugin functions for filters/actions, The Walker Classes,
Capabilities, Cron

More detail on the error message returned (like the full text) would help
debug it before raising a trac ticket as it may well be a plugin issue.

Cheers

westi
-- 
Peter Westwood <peter.westwood at ftwr.co.uk>
http://blog.ftwr.co.uk