ITunes 10.1.2.17 and QuickTime 7.69.80.9 will not open in Windows Vista

Question

When I try to open iTunes, I get the following error message:
*iTunes has stopped working*
Problem signature:
Problem Event Name: BEX
Application Name: iTunes.exe
Application Version: 10.1.2.17
Application Timestamp: 4d3f51b8
Fault Module Name: StackHash_fd00
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Offset: 000a6398
Exception Code: c0000005
Exception Data: 00000008
OS Version: 6.0.6002.2.2.0.768.3
Locale ID: 3081
Additional Information 1: fd00
Additional Information 2: ea6f5fe8924aaa756324d57f87834160
Additional Information 3: fd00
Additional Information 4: ea6f5fe8924aaa756324d57f87834160
I also get a small message from the bar at the bottom: +"iTunes was closed. To help protect your computer, Data Execution Prevention has closed iTunes. Click to learn more."+ A Windows help and support box then comes up explaining DEP.
When I try to open QuickTime, I get the following message:
*QuickTime Player has stopped working*
Problem signature:
Problem Event Name: BEX
Application Name: QuickTimePlayer.exe
Application Version: 7.69.80.9
Application Timestamp: 4cf444ff
Fault Module Name: QuickTimePlayer.dll
Fault Module Version: 7.69.80.9
Fault Module Timestamp: 4cf444e1
Exception Offset: 00005b6d
Exception Code: c0000409
Exception Data: 00000000
OS Version: 6.0.6002.2.2.0.768.3
Locale ID: 3081
Additional Information 1: a2db
Additional Information 2: 7e6f5586abb4e666d0e5505709ac4dfe
Additional Information 3: 6b56
Additional Information 4: 3a3fb1fbf80103851f8d6220024d64f6
Having read many other questions similar to mine, I have also checked the QuickTime files in my System32 folder and I have the following:
C:\Windows\System32\quick.ime
C:\Windows\System32\QuickTime.qtp
C:\Windows\System32\QuickTime.qts
C:\Windows\System32\QuickTimeVR.qtx
Can someone please help me?
Rob

Answer 1

You should only have two Quicktime files in your system32 folder.
Quicktime.qtp should not be there. It's likely that you have installed something such as a codec pack that has installed additional Quicktime components.
Try dragging Quicktime.qtp out of your system32 folder to your desktop and see if Quicktime works. If it does, try iTunes.
Were there any Quicktime folders in your system32 folder? If so you don't want those either.