Apple just released a new update for iTunes, saying, “This update corrects an issue with iTunes in the Cloud, where some purchases may download or play unexpected items.”
What does that mean, exactly? Apple didn’t say much more, but I’m guessing that some users were clicking on the button to download a previous purchase that was stored in iCloud, but ending up with something totally different.
This update should totally fix that. You can download the new 11.0.5 update directly from the Apple support site linked below, or use the Mac App Store via Software Update to get it.
Source: Apple Support.