When downloading Mac OS X Yosemite 10.10.1 Update, received the message "The application Finder.app is not open anymore." when clearly it was open, as I was downloading the update.
Why?
iMac (27-inch Mid 2011), OS X Yosemite (10.10), Safari 8.0
You are downloading in Safari or the App Store, but not via the Finder. Click on the Finder icon on the left side of the Dock.
I am well aware of that Kappy. What I am telling you is that this popup occurred while downloading and installing the Mac OS X 10.10.1 update. After the restart, Finder did, in fact, fail to launch, although it had been working just fine when I downloaded and installed the update. One relaunch and one restart failed to get Finder to start, and none of my desktop items (i.e. the icon for my Macintosh HD) appeared. When I opened Activity Monitor it showed both Finder and Spotlight not responding. I restarted again and Finder failed to launch again. I opened Activity Monitor and began to run a Sample on the Finder process and only then did Finder finally launch and my desktop items showed up. Total elapsed time was approximately 10-15 minutes to get Finder to launch after multiple restarts. I looked in the Console app and apparently what was happening was that the following message was being repeated 256 times:
11/19/14 10:29:02.000 PM kernel[0]: BUG in process suhelperd[197]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external) .
I have no idea what this means or why the OS X Yosemite 10.10.1 update caused Finder not to launch.
I'm afraid I don't know what it means either. But there also is no reason it was caused by the update. I've updated three different Macs and haven't seen that happen. I would try reinstalling Yosemite then reapplying the update. I would also delete the Finder's preference file in case it is corrupted.
OS X Yosemite 10.10.1 Update The application "Finder.app" is not open anymore message
