Nadp
Hello,
I'm having the same issue. It started when my iTunes refused to open; I tried to re-install it and the Installer kept crashing or telling me:
"The Installer can’t open the package. There may be a problem with file ownership or permissions."
I trashed iTunes and then tried to empty my Trash, to no avail. I tried the Secure Empty Trash but it was saying I had something like 40,000 items in my trash, and last time I checked that was certainly not the case (I empty my trash on a regular basis), so I chickened out of that. I tried the Terminal solution but I get this as a response:
rm: illegal option -- .
usage: rm [-f | -i] [-dPRrvW] file ...
unlink file
How do I fix this? I can't empty my Trash, I can't get iTunes to work, and I want access to my Christmas music

Any help would be greatly appreciated!!