Will not install itunes64setup.exe version 10.5.2.11 x64, on Vista

Question

I have Vista x64 home, itunes version 10.5.1.42 x64, runs fine.  In itunes I clicked update - itunes software manager downloads & saves one item. Click install 1 item. Brings you right back to the update manager.   Does not even try to install.  Next I downloaded the itunes64setup.exe file (42.92MB - file version10.5.2.
11 x64) to my desktop.  Opened this file, install starts, then I get -  INSTALLER ENCOUNTERED ERRORS BEFORE ITUNES COULD BE CONFIGURED.  Install attempt ends.
How do I get it to update ??  Either method fails.   ?????????
Bob

Answer 1

I have Windows 7.  The new update tried to install and crashed my iTunes.  I have never had this probelem with iTunes.  I am not sure what is going on over there, but I have been spoiled by the flawless use of iTunes, now, alas, it is failing like other sand becoming unstable and if it keeps doing this after each update, (3rd time now), I am going to dump the whole thing.
Bear in mind, I have had to completely reload this program EVERYTIME a new update happens.  The last time, I even had to dump and re-load my iPod.  Now, this new update I get THIS ERROR:
The installer has encountered an unexpected error installing this package.  This may indicate a problem with this package.  The error code is 2324
There was a time when this app NEVER EVER failed.  Getting a little tired of it now.  It locks up, shuts down inadvertently, stops during a movie while still playing audio, then after a few minutes, the movie takes off in supper speed motion and catches up to the audio.
Please advise!