I've just downloaded the trial version file named "NAV9_15D.EXE" from Symantec's web site.
When the extraction finished, the installation program quited immediately & silently!

I did try going into the destination folder of the extraction & execute the setup.exe manually, but the result was the same!

How can I make the installation work?
I've uploaded the NAV.log installation log file for reference. Please download and have a look in a text-editor (Note: Since I'm using Chinese version WinXP, the file will have a few BIG5(Chinese) coding charactors):
http://my_world_1.tripod.com/NAV.log

Since I'm not familiar with Windows programming, I cannot figure out what caused the installtion error from the NAV.log file.
Can any programmer help me point out the problem?

Thanks in advance!