Quicktime and izunes crash

Question

Hi,
If I want to start the quick time it gives me this error:
Problémaesemény neve: BEX
Alkalmazásnév: QuickTimePlayer.exe
Alkalmazásverzió: 7.66.71.0
Alkalmazás időbélyegzője: 4ba1a755
Hiba – modul neve: QuickTimePlayer.dll
Hiba – modul verziója: 7.66.71.0
Hiba – modul időbélyegzője: 4ba1a74a
Kivétel – eltolás: 00005b6d
Kivételkód: c0000409
Kivételadatok: 00000000
Operációs rendszer verziója: 6.1.7600.2.0.0.256.4
Területibeállítás-azonosító: 1038
További információk 1: 7b9b
További információk 2: 7b9be307742c43f10982835587ac49da
További információk 3: 9315
További információk 4: 9315f6e48c9e54c0ec6feb7ec38b22de
My itunes error is this:
Problémaesemény neve: APPCRASH
Alkalmazásnév: iTunes.exe
Alkalmazásverzió: 9.1.1.12
Alkalmazás időbélyegzője: 4bd8abf9
Hiba – modul neve: icuin40.dll
Hiba – modul verziója: 4.0.0.32
Hiba – modul időbélyegzője: 4b637eed
Kivételkód: c0000005
Kivétel – eltolás: 0008530e
Operációs rendszer verziója: 6.1.7600.2.0.0.256.4
Területibeállítás-azonosító: 1038
További információk 1: 0a9e
További információk 2: 0a9e372d3b4ad19135b953a78882e789
További információk 3: 0a9e
További információk 4: 0a9e372d3b4ad19135b953a78882e789
I have tried almost everything, I uninstalled it, I have deleted all files, but nothing changed after the installation. I use Win7 64bit operating system.

Answer 1

I'm not sure I've ever seen the problem report format from a Hungarian localisation of Windows before.
I think we should follow up on the iTunes problem report:
Hiba – modul neve: icuin40.dll
Hiba – modul verziója: 4.0.0.32
icuin40.dll is an Apple Application Support dll. Since both QuickTime and iTunes require a properly functioning Apple Application Support in order to work correctly, it's quite possible that a damaged Apple Application Support is causing both problems.
So, I think we should try uninstalling both QuickTime and Apple Application Support, and then reinstalling QuickTime (which should also reinstall Apple Application Support). We'll take a few other explicit precautions along the way, just in case. Best to print these instructions out because at one stage of proceedings you won't be able to use a web browser.
Preliminaries
Download and save a copy of the QuickTimeInstaller.exe (installer) file from the following web page. Get the installer that doesn't mention iTunes. Don't run the install online, and don't start the install just yet.
http://www.apple.com/quicktime/download/
Quit Safari and/or the MobileMe control panel if you have them installed and open. Both use Apple Application Support and will interfere with the uninstall if they are running.
*Uninstall phase*
Go into your Uninstall a Program control panel. Uninstall QuickTime. Uninstall Apple Application Support.
(From this point onwards Safari and/or the MobileMe control panel will not run until we reinstall Apple Application Support.)
Next we'll remove any leftover program files. (Fingers crossed, these various folder have the same names on a Hungarian localisation of Windows.)
In Computer, open Local Disk C: or whichever drive your program files are installed on.
Open the "Program Files (x86)" folder.
Right-click on the "QuickTime" folder (if it still exists) and select "Delete".
*Staying in "Program Files (x86)",* open the "Common Files" folder.
Open the "Apple" folder.
Right-click on the "Apple Application Support" folder (if it still exists) and select "Delete".
Go back into Local Disk C: or whichever drive your operating system is installed on.
Open the "Windows" folder.
Open the "SysWOW64" folder.
Right-click on the QuickTime and QuickTimeVR files (if they still exist) and select "Delete".
Empty your Recycle bin.
*Reinstall phase*
Restart the PC. After the PC restarts, you'll probably see a message saying that iTunes can not run. Click through the message.
Do not open any applications after the PC restarts. Disconnect from the internet and/or your network. Now switch off all your security software (firewall, antivirus, antispyware).
Now start the reinstall by doubleclicking the QuickTimeInstaller.exe file you downloaded earlier.
Reenable all security software prior to reconnecting to the internet and/or your network.
Did the reinstall go through okay? If so, do iTunes and QuickTime start launching properly again?