Ok, I still seem to be getting the same error, but at least this time I can see the headers. Here is a header that was generated for one of the files I uploaded:

POST http://www.environet.gov.on.ca/dwws-app/DWWSApp?cmd=UploadSubmPag
+e.uploadSubm
Content-Length: 11052
Content-Type: multipart/form-data; boundary=xYzZY

--xYzZY

Content-Disposition: form-data; name="works_id"



210000586

--xYzZY

Content-Disposition: form-data; name="lab_id"



48

--xYzZY

Content-Disposition: form-data; name="filename"; filename="210000586-2
+10001130.txt"

Content-Length: 10761

Content-Type: text/plain
[download]

And this is the error that the website sent me back:

Malformed line after disposition: Content-Length: 10761
[download]

Arrrgh, I hate this site ;) It's given me nothing but problems...

-Tim