ITunes 8 prompts a reboot everytime I launch it

Question

I attempted to do an update to version 8 this morning. First tried from iTunes. After the "update" I was prompted to reboot. Upon reboot, it told me that I had to reboot for changes to take place. Tried a few times...no luck.
Plan B. Uninstall and then reinstall from apple.com. Same issue.
Glad I tried this on the computer that I don't do my main sync. This has turned out to be a FIASCO.
Any way to fix this...?
<Edited by Moderator>

Answer 1

*OK I fixed this*:
Follow these steps until Apple fixes this or someone with more time figures out exactly what steps are needed and which are not needed:
*FIRST FOLLOW THE OLD STEPS:*
go to start menu --> run
type regedit, press enter
go to computer/hkeyclassesroot/
find pcast and right click it
click permissions
during the course of this you may get a message saying you cant change anything, but you can change who can change things. click ok on it.
click advanced, then owner tab
change the owner from administrator to whatever name you are using
click ok twice to get out of the pop-ups completely
right click pcast again
click permissions
click OWNER RIGHTS
by full control and read click the allow boxes.
click ok
You will need to do this potentially on every registry key under pcast. In my case it was these:
pcast
pcast/DefaultIcon
pcast/shell
pcast/shell/open
pcast/shell/open/command
Some of these Registry Keys did not show up until I fixed the permissions on the above Key, then opened itunes. Then a new key would appear and I would fix that folder.
The additional steps that fixed this new iTunes 8 issue was to then add the everyone account and give it full control on each of these keys. Once I did this itunes worked and loaded with no issues.
*IF THIS IS YOUR FIRST TIME* trying to fix this issue do this first:
Follow the old steps, and add the everyone group to the pcast folder with full control and see if that alone fixes it for you. Please let us know if that works and we can reduce the steps needed.
Dennis