attachment client leads to provider failure

[T E Reisler]

Hi,

I am trying to write a http client that will login, attach, and logout.
I am having problems with the attach. It leads to a "Upload failed
because the provider failed: Parent page does not exist (attachment:
(unknown)). AFAIK, the client duplicates what my browser is doing. I am
giving the same parent page as the "page" parameter, but no dice. I
assume that I can ignore the progressbar ajax part.

Thanks,
ter