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After Effects needs a version of QuickTime more recent than 6.6 if you're going to use QuickTime formats.
You should be able to install QuickTime 7.6.x on a computer with QuickTime X. I have, as have many others.
If QuickTime X is somehow keeping you from installing QuickTime 7, then this seems like a job for Apple Technical Support. http://support.apple.com/
Thanks Todd! Happy New Year! I have Quicktime X and Quicktime 7.6.6 Pro installed. I had an error message and now it is working.
The is the other message that I get after the I say Ok to the Quicktime message. Then it says there is missing output.
The Output Module choices seem limited to me but I don't know what is available with After Effect. There is no ProRes or other such choices. How can I fix this?
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> The Output Module choices seem limited to me but I don't know what is available with After Effect.
Those are just the templates. Think of them as presets. You can choose from many, many more customized options.
You should read the documentation rather than diving into the middle. After Effects (like any professional software) is confusing when you just dive into the middle.
Here's a good place to start for learning about rendering and exporting: "Rendering and exporting overview"
Regarding your problem with QuickTime, it's hard to help you if you don't give the exact text of the messages that you're seeing.
If you actually have QuickTime 7.x installed, and you're getting that message, then it's possible that something is blocking After Effects from communicating with the QuickTime server. See this document for a possible solution for that:
Basically, it suggests turning off your firewall software or explicitly telling it to let the Adobe QT32 Server process communicate.
Here's another thing to try: Log in to your computer as the root user. Once you are logged in as root, start After Effects and see if the problem with QuickTime persists. If it works OK, return to your regular user account and try again. For information on enabling the root user, see the Apple documentation on enabling the root user account, located here.
BTW, I just noticed something in re-reading your first post. You said that you "removed the 10.0 folder" and put it back again. I think that you missed the point of removing that folder. You should delete the preferences folder. The point is to delete it and let the application recreate a fresh version.
You should reset your preferences by removing this folder:
... or even this one if you haven't set any preferences yet for other Adobe applications:
1. Quicktime. I don't know about firewall. The document didn't say how to turn off firewall software or letting it processing communications. I will try enabling root user account.
2. From your second response:
At the time, I read some posts and I saw your post elsewhere to delete that files so I thought I would try deleting the 10.0 folder and see what happened.
When After Effects does launch it is after several minutes.
fyi Here is where I deleted the 10.0 folder and added it back again. Before doing that is did not launch. I will delete the After Effect folder and see if that works.
Thanks for the help.
I deleted the After Effects folder. It now takes over 10 min to launch. Not sure why it take so long.
I launched AE from the root and it did not have the Quicktime error but when back to regular admin log in and it still comes up. Other suggestions?