Upgraded itunes and quicktime, now it won't open b/c dont have right OS

I recently upgraded my itunes. After the upgrade was successful, i tried to open it and it said i had to download quicktime 7.5 or more for this version of itunes to work. so i downloaded quicktime. then when i clicked on the itunes icon, it said my operating system (10.4.11) can't open it. Now i can't use Itunes at all. I would like to use the newest version, but would like to get back to the old one i had so at least i can use it. What should I do? do i need to uninstall it? how do i do that? in the long run, is there a way to upgrade my operating system so that I can use the latest versions of these things?

Did you download the proper version of Quicktime for your OS (Tiger)?
If not, get it here: http://www.apple.com/quicktime/download/
Be sure to select the version for Tiger.

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Upgraded iTunes and Quicktime now whole puter not working

I just upgraded iTunes and Quicktime for OSX 10.4, now after a restart i finder just keeps flashing, on and off and i cant open anything. Need help to fix or go bak to old versions?

thanks sarah, but the disk didnt work. i get to verifying my main drive and it comes back with:
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Error: The underlying task reported failure on exit
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I try to repair disk anyway but says the same thing on trying to do that?? any suggestions anyone?
Could i get the update for 10.4.8 and put on a disk to upgrade the OS from booting from the CD or from terminal mode? Does anyone think this could fix the prob?

A friend of mine downloaded an app from the internet onto my iPod Touch 4 so I could play pokemon on my iPod, I deleted the app but now iTunes and the App Store won't open, they say that the certificate for this server is invalid. What should I do?

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Try:
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Reinstall 10.6 again, but this time hold c boot off the 10.6 and erase the ENTIRE internal drive.
You do this by selecting the drive makers name and size on the left hand side, not the slightly indented partition underneath it.
If you erase and install 10.6 only into a parittion, say Macintosh HD, the you still have the hidden Lion Recovery Partition on the drive and it appears you already have 10.7
In the MAS, hold option and click Purchases to redownload Lion
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See this for more info
https://discussions.apple.com/docs/DOC-3046

Updated iTunes and QuickTime, now neither will launch

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TD, thanks for the suggestions, but I'm still stuck. Here's what I've tried:
1. Deleted the com.apple.iTunes.plist file, restarted iTunes and it would not launch.
2. Created new account, tried launching iTunes. It did not launch.
3. Downloaded and reinstalled iTunes and QuickTime, then restarted. iTunes, QuickTime, and Firefox would not launch.
4. Re-reinstalled iTunes and Quicktime, restarted, still unable to launch iTunes or QuickTime.
Any further ideas? I'm stumped! Thanks.

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Thanks,
Paul

davew100 - It is importen to have Pages in the iWork folder in the folder applications in your account. If you have moved it Software updater can't see if you need to update.
You have the possibilty to downlaod the updates from iWork . You still need to have iWork in the Application folder.

Forced iTunes to quit now it won't open anymore and it took Quicktime down

I moved my iTunes files over when I got a new computer and I have added a lot to of new material since then. Recently I plugged my iPod into the old computer to access it's hard drive and, much to my surprise, it was still authorized for the old iTunes and it immediatly tried to synchronize. This of course meant that it began deleting all the new files on my iPod (like about 400 new songs) that I had added with the other computer.
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512 Meg of RAM
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it's saying i need apple support or something?
Let's try a standalone Apple Application Support install. It still might not install, but fingers crossed any error messages will give us a better idea of the underlying cause of the issue.
Download and save a copy of the iTunesSetup.exe (or iTunes64setup.exe) installer file to your hard drive:
http://www.apple.com/itunes/download/
Download and install the free trial version of WinRAR:
http://www.rarlab.com/
Right-click the iTunesSetup.exe (or iTunes64Setup.exe), and select "Extract to iTunesSetup" (or "Extract to iTunes64Setup"). WinRAR will expand the contents of the file into a folder called "iTunesSetup" (or "iTunes64Setup").
Go into the folder and doubleclick the AppleApplicationSupport.msi to do a standalone AAS install.
Does it install properly for you? If so, does iTunes launch properly now?
If instead you get an error message during the install, let us know what it says. (Precise text, please.)

Hello, I have windows 7, Im getting msvcr80.dll error 7(windows error 126) when I tried to update my itunes. Now it won't open. Does anyone have a remedy? And when I try to uninstall it says that the file cant be found.

Hello< I have windows 7, I tried to install the new itunes version, last night 1/30/14, Im getting msvcr80.dll error 7 (windows error 126). Does anyone have a remedy for this? When I try to uninstall the ituned program it says it can't be found and to make sure I have permission to uninstall.

Same problem today. Took five times to reinstall without any error messages. I did the following:
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I have also called tech support and they suggested I reinstall the entire FCS1 & 2 software so I did. Everything seems to be running properly now.
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+I get and error message saying it cannot find a certain file.+
What's the *full and precise* text of that message? (That might be of some assistance with determining what's going on.) Include error message numbers if you're getting any.

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If you need to reboot after updating then this usually means that files were in use and couldn't be updated.<br />
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Boot the computer in Windows Safe mode with network support (press F8 on the boot screen) as a test to see if that helps.
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AMD64 Windows XP Pro

The procedure entry point QTCF_CFUniCharGetUnicodePropertyDataForPlane could not be located in the dynamic link library QTCF.dll
The most common cause of that one is a misplaced older version of the QTCF.dll lurking about in your system. On an x64 system, the best place to start looking is in the C:\Windows\sysWOW64\ directory.
Do you see a QTCF.dll lurking in there? If so, try dragging it out onto the desktop. Can you launch iTunes and QuickTime now?

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hi jmorta!
apologies for the slightly impersonal nature of this reply, but i've just started troubleshooting one of these off in another thread in my post immediately prior to this one ...
let's start you off with the techniques i'm starting anndruu off with over here:
http://discussions.apple.com/message.jspa?messageID=1789002#1789002
love, b

ITunes and QuickTime Player give me a QTCF.dll error when trying to launch

When i try to open iTunes on my laptop it gives me an error saying:
iTunes.exe - entry point not found
The procedure entry point
QTCF_CFUniCharGetUnicodePropertyDataForPlane could not be located in the dynamic link library QTCF.dll
i also get a error for quick time player displaying the same message for Quick Time.exe
i have uninstalled both programs and reinstalling them several times. i have also check to see if they work on other accounts on my laptop. they do not work.
Message was edited by: Nemesis2010

The procedure entry point QTCF_CFUniCharGetUnicodePropertyDataForPlane could not be located in the dynamic link library QTCF.dll
The most common cause of that one is a misplaced older version of the QTCF.dll lurking about in your system. On an x64 system, the best place to start looking is in the C:\Windows\sysWOW64\ directory.
Do you see a QTCF.dll lurking in there? If so, try dragging it out onto the desktop. Can you launch iTunes and QuickTime now?

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Me too... The other post relating to this was with a PC but the same is happening for macs too by the look of it. Has anyone got an idea of how to sort this out? I don't suppose it's possible to find an earlier version of iTunes to download? I'm going to have a search now cos I need iTunes to be working!

Upgraded itunes and quicktime, now it won't open b/c dont have right OS

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