multipart/form-data formatted requests

I'm not sure that I'm posting this question to the correct list.  I ran a search on O'Reilly's MultipartRequest class, and it pointed me to servlets.com.  So, when I entered the Mailing Lists link, I was pointed here.  If this question is not best suited for this list, please let me know and I'll redirect it.  In that case, if anyone knows where this would be best posted, I'd appreciate the heads up.

I recently wrote a test program using Apache's HttpClient and O'Reilly's MultipartRequest, to upload a file using a multipart request format.  This worked fine when using an older version of HttpClient, however recently they made a few changes to better conform to some of the smaller details of the multipart/form-data specification (http://www.ietf.org/rfc/rfc2388.txt); namely, they now include 'Content-Type' and 'Content-Transfer-Encoding' headers for each part.  

Since these modifications I receive exceptions when trying to run my program.  I've taken a look at the RFC for multipart/form-data and it would seem that Apache implemented these changes in compliance with the specification.  I see in the javadoc that MultipartRequest used RFC 1867 (http://www.ietf.org/rfc/rfc1867.txt) for the class, however, I guess my question is: does O'Reilly's MultipartRequest not accept multipart request which fully adhere to RFC 2388?  Was I possible using an older version of it, while I might not run into these problems with a newer one?

Thanks,

Daniel