I am now unable to open I-Tunes on my computer

Question

All of a sudden, whenever I try to open I-Tunes, I get the following message:
"The I-tunes application could not be opened. An unknown error occured (-50)"
If I try to re-download the program, will all of my stored music be lost?

Answer 1

Re-installing iTunes should not affect your music, but you should always have backups.
It is a good idea to make copies of iTunes Library.itl and iTunes music library.xml in the iTunes folder. They should be OK but seem to be the ones that most often go wrong. If you attempt to downgrade, your library may ot work but that is an easy fix.
But ... how about fixing iTunes, reinstalling may not work if there is a problem.
The first step is to try and open Quicktime as iTunes cannot work if Quicktime doesn't.
If QUicktime is OK, then use the Apple troubleshooting article:
XP
http://support.apple.com/kb/TS1421
Vista version
http://support.apple.com/kb/TS1717
If Quicktime doesn't work that has to be fixed, give the Quicktime error message.
Go to your control pane; and try to start QUicktime preferences. Give the full text of any error message.
Have you installed any of the following:
ACE & K-Lite mega codecs package, QT alternative, Storm codec, WinAVI video converter
They are bad news for Quicktime.
Message was edited by: polydorus