hiya!
I'm trying to install it in the drive C: why?
in some rare cases i've seen the 1639 show up when folks try to install itunes to a "recovery partition" on a hard drive, or download the installer to the recovery partition and then try to install it on a different drive
from there. (recovery partitions can be odd beasts.)
but if that's not a factor in your case, let's try enlisting some additional technical help.
let's try getting a installer log to someone who can interpret installer logs.
Start menu -> Run... In the text field of the dialog that comes up, type in "cmd" and hit return.
In the command prompt dialog that comes up, find the iTunes installer on your desktop and drag it to this window. Then on the same line type in a space and then the following:
/Verbose"c:\log.txt" /V"ENABLE_QTLOGGING=TRUE"
There is no space between the e in Verbose and the double quote ("). There is no space between the V"Enable...
Hit return.
The installer will create two log files:
C:\log.txt and C:\qt.log
Find those files and
send them to this email address Put the URL to this discussion thread into the email, so that the person who gets it has some context. Let them know the version of itunes you’re trying to install, too … in general, give as much info as you can.
love, b