Permission Denied during install [wubi 9.10]

When I'm trying to install the ubuntu 9.10 with Wubi installer for Microsoft Windows. I met the message as follows.

[Message]

Permission denied

For more information, please see the log file:
C:\Documents and Settings\user_name\Local Settings\Temp\wubi-9.10ubuntu1-rev160.log

I check the log file. "... Permission denied: u'D:\\ubuntu\\install\\ubuntu-9.10-desktop-amd64.iso' ..." The filesize of "ubuntu-9.10-desktop-amd64.iso" downloaded by Wubi is not the same with the official release.The filesize problem may caused by the network connection.


[Solution]
1. I download the official version of "ubuntu-9.10-desktop-amd64.iso" and mount the ISO file by the virtual CD-rom software: DAEMON Tools lite (download)

2. Run the Wubi again. Wubi installer will check the ISO file within CD-rom first befroe it download the ISO files from mirror servers directly.





[Reference]

1. Wubi FAQ: Can I use an existing ISO/CD instead of letting Wubi download a new one?
2. Bug #365881 in Ubuntu: “wubi installer's pyrun.exe says "no disk"”
3. Bug #364600 in Wubi: “ install ubuntu9.04”

[log file]
01-18 22:24 DEBUG TaskList: # Cancelling tasklist
01-18 22:24 DEBUG TaskList: # Finished tasklist
01-18 22:24 ERROR root: [Errno 13] Permission denied: u'D:\\ubuntu\\install\\ubuntu-9.10-desktop-amd64.iso'
Traceback (most recent call last):
File "\lib\wubi\application.py", line 56, in run
File "\lib\wubi\application.py", line 130, in select_task
File "\lib\wubi\application.py", line 156, in run_installer
File "\lib\wubi\backends\common\tasklist.py", line 197, in __call__
File "\lib\wubi\backends\common\backend.py", line 492, in get_iso
File "\lib\wubi\backends\common\backend.py", line 348, in download_iso
OSError: [Errno 13] Permission denied: u'D:\\ubuntu\\install\\ubuntu-9.10-desktop-amd64.iso'