Error Message Upon Startup

Question

Hello All,
I'm having this very annoying problem with iTunes 7.6. When I try to start the application, I get the standard Windows error message: "iTunes has encountered a problem and needs to close." Here is the only info I have on it, from the error report:
AppName: itunes.exe AppVer: 7.6.2.9 ModName: unknown
ModVer: 0.0.0.0 Offset: 000c0189
I've tried uninstalling and reinstalling, I've tried the Repair function on the installer, I've tried using a different installer download, and nothing is working.
It is worth pointing out to you tech-savvy people that when I first encountered I had an iTunes problem was when I tried to open it (it must've been 2 months since I'd last tried it on this computer, I don't recall any problems beforehand), it said I needed to update QuickTime. I did, and then this. Now neither iTunes nor QuickTime works. The same thing happens with QuickTime.
HELP!!!!!
Thanks!
Cheers,
Cameron

Answer 1

The QuickTime problem will be causing the iTunes problem. (iTunes needs a properly functioning QuickTime in order to work correctly.)
So let's try swapping out your existing QuickTime.
Head into your Add/Remove programs. uninstall QuickTime.
Next, we’ll manually remove any leftover program files and folders.
1. On the Start menu, click My Computer (or double-click My Computer on the Desktop).
2. In My Computer, open Local Disk.
3. Open Program Files.
4. Right-click on the QuickTime folder and click Delete from the shortcut menu.
5. Navigate to C:\Windows\system32\.
6. Remove the files QuickTime.qts and QuicktimeVR.qtx. (If “Hide filename extensions for known file types” is enabled on the PC, then those two files will appear as “QuickTime” and QuickTimeVR”.)
7. Restart your computer.
Next, we'll get a fresh copy of QuickTime into your PC by doing a repair install of itunes.
Switch off antivirus and antispyware applications prior to the repair install.
Go into Add/Remove and select itunes. Click "Change" and then click "Repair".
If the repair install goes through okay, restart the PC and try launching itunes again. Does it launch properly now?