I'm getting a redirect but the result page (pdf) is not
written to disk.  Following is the log:

Host: vietkiem.com
File: /index/?action=download_file&id=10208
Name: D:/Downloads/KimHiep/VietKiem/http   
www.vietkiem.com/vietkiem.com/index/indexa868.html
MoveToLocation: 
<http://vietkiem.com/vietkiem/udh/hbhhk/hbhhk08.pdf>
ContentType: text/html
StatusCode: 302 (Moved Temporarily)
InternalStatus: 97 (unknown)
StatusMessage: Found
HTTP/1.1: yes
ChunkMode: yes
CurrentChunkSize: 0
TestMode: no
HeadRequest: no
NotModified: no
WriteToDisk: no
LocalFile: no