Hello,
After upgrading yesterday from Snow Leopard to Mountain Lion OS 10.8.3 on MacMini early 2009, I today downloaded correspondent new XCode app from Apple Store to my Application folder.
Tried to open old Quartz Composer.
No way. Error Message:
//
An exception was raised:
+[QCImageManager registerImageBufferConverterClass:priority:]: "BackdropsImageBufferConverter" is already registered
//
Then I found Ralph Johns's post on archived thread https://discussions.apple.com/thread/2373658:
"If the timings went Snow Leopard Install then 10.6.2 update the Developers Tools I would try running the COMBO version of the OS Update over what you have.
http://www.apple.com/downloads/macosx/apple/macosx_updates/macosxv1062updatecomb o.html"
So, I downloaded OSXUpdCombo10.8.3.dmg and installed that update.
Then deleted all items from my Developer folder and downloaded new Quartz Composer app, through xcode46graphicstools6938140a.dmg and tried to open it.
-> Same error message.
What can I do?
Thank you for helping,
Michel
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