Cannot start iTunes after installing Lion

Question

I installed Lion Mac OSx, then I started iTunes.
It didn' work, an error message appeared asking me to check whether this version of iTunes works on this vesion of Mac OS. As well, the message asked me to get the latest iTunes and Mac OS update, which I did.
But the same message appears again.
I totally removed iTunes and re-installed it, but nothing new.
Please help.

Answer 1

you can't install XP on new 2011 Macs.
Boot Camp 4.0 doesn't include drivers, that does not mean you can't install XP.
Boot Camp 4 Lion Installation & Setup Guide (PDF)
While Boot Camp 4.0 will run in eitherSnow Leopard or Lion, it is a requirement for setting up new Windows installations in Lion even though existing Boot Camp 3 installations will continue to work in Lion if you upgrade your systems. What this means is that if you have an existing Windows XP or Vista installation when you upgrade to Lion then Boot Camp will still work, but you will not be able to upgrade it to version 4 or later.
Boot Camp 4 requires Windows 7 or later | MacFixIt - CNET Reviews
You don't NEED new 4.0 drivers, that is settled.
There is one sentence in the above article that needs to be confirmed, I highly doubt the accuracy:
if you decide to set up a dual-boot environment for Windows from a Lion installation then you will need to have Windows 7 or later, as your older XP or Vista discs will not work.
The only way Lion can allow XP to boot if it was there before, but not allow installing, would have to be the GPT partition.
Block = prevent = "cannot install" IS a form of blocking and preventing.
So Apple does block.
OP:
My iMac (27-inch, Late 2009) or iMac (21.5-inch, Mid 2010) displays a black screen during installation of Microsoft Windows 7 using the Boot Camp Assistant.  How do I fix it?
The Windows 7 installer does not include required graphics or Bluetooth drivers for this computer.  To obtain the necessary drivers and resolve the issue, see this article.
https://support.apple.com/kb/HT3986