Apple Releases OS X Mountain Lion Developer Preview 3

Just over a month after the arrival of the previous build, Apple today seeded registered members of the Mac Developer Program with the third developer preview version of OS X Mountain Lion.

mountain lion dev 3
The new version arrives as Build 12A178q, up from the earlier 12A154q version. Changes included in the new version have yet to be discovered, but those with access to the build will undoubtedly be searching for Apple's latest tweaks as the company continues to work on the next-generation operating system.

Apple does list a number of known issues with the current build:

- On systems with FileVault enabled, canceling the restart to the Mountain Lion Developer Preview 3 Installer may leave your system unable to present a password dialog at boot time. You can repair the problem by holding down command-R to boot to the Recovery OS and then using Disk Utility to unlock and Repair your volume.
- Installing OS X 10.8 over 10.7.2 or earlier with FileVault turned on may fail
- Pre-Lion FileVault user accounts are not supported in this Developer Preview
- Some Apple menu items such as Restart may not work when a sandboxed app is in the foreground
- iTunes no longer syncs Notes
- Mail's photo browser cannot access the iPhoto library
- Back to My Mac doesn't work for the first 5 minutes after rebooting
- DVD Player may not launch after inserting a DVD on some systems
- Most help topics are unavailable in this Developer Preview
- In the Recovery HD:
     - Some icons may be missing
     - Network Utility's Lookup pane does not work
     - Time Machine restoration via a AFP share does not work
     - Restoring from a Time Machine backup via AFP does not work
- Migration from a Time Machine backup that excludes paths such as /System may yield an unusable system
- Brightness settings may change unexpectedly after reboot
- Display brightness may be dim after sleep or reboot
- If Mail is hidden at logout time, it may not be correctly relaunched during a subsequent login but will appear to be running
- Java applets may not work in Safari
- QuickTime screen recordings may produce corrupted videos or cause an exception when run on machines with NVDIA graphics

Apple also appears to be continuing to put a fair amount of effort into getting Game Center up and running on OS X with the new build.

OS X Mountain Lion is Apple's next major operating system version and is scheduled for release in "late summer". The release will offer greater integration with iCloud, as well as a number of new feature including some drawn from iOS.

Top Rated Comments

wikus Avatar
157 months ago
Mission Control needs refinement.

Please give us an option in system preferences to turn OFF grouping of windows when Mission Control is activated. A simple OPTION would satisfy so many people and would have ZERO effect on all those that negate this request.

If you have 3 windows open in Illustrator and another 3 open in Photoshop and you want to drag an object from illustrator to photoshop, you need to do the following;

1) Click and hold the desired object in Illustrator
2) Hit a hot corner to activate mission control (show all windows, grouped by app)
3) Hover and hold over the group of windows in Photoshop
4) Hit another hot corner to show all windows from within Photoshop
5) Hover and hold over desired open document in Photoshop
6) Let go of the object and it gets pasted in

STEPS 3 AND 4 RIGHT THERE ARE WHY MISSION CONTROL IS A FAILURE.

Expose allowed everyone to go DIRECTLY into the desired open document window of any specific application, bypassing steps three and four. Lion DID NOT make things easier, it made workflow SLOWER.
Score: 29 Votes (Like | Disagree)
Consultant Avatar
157 months ago
Mission Control needs refinement.

Please give us an option in system preferences to turn OFF grouping of windows when Mission Control is activated. A simple OPTION would satisfy so many people and would have ZERO effect on all those that negate this request.

Write to apple.com/feedback
Score: 26 Votes (Like | Disagree)
wikus Avatar
157 months ago
Nobody likes nazies. Unless they are zombies as well.

You spelled 'Nazis' wrong.
Score: 15 Votes (Like | Disagree)
wikus Avatar
157 months ago
Just to be more accurate, it would have a (negligible, but) non-zero effect on those who negate the request. After all, it would be an additional checkbox for eyes to scan over, it takes up physical pixels, etc.

If it were truly zero negative effect, then all software and operating system problems could be solved by adding more checkboxes in the settings. But who wants to use software that has really complicated settings pages?
A single checkbox in System Preferences isnt somehow going to make things any different. Here's how it looks like in OS X Lion currently;



Heres how it is in Snow Leopard;



Anyone that knows how to use System Preferences wont find the single extra checkmark any more confusing. The options in OS X change regularly anyway, but Apple has failed miserably to give multitaskers some proper options with Mission Control, that is to say, Expose was fantastic, seeing ALL my open windows ALL AT ONCE by hitting a hot corner gave me the ability to quickly go from Illustrator to Photoshop without hitting any keys or using a trackpad and, this is the big one; without releasing any objects i've selected in Illustrator. Direct drag and drop via Expose is now GONE.
Score: 13 Votes (Like | Disagree)
afin Avatar
157 months ago
I hope they take as much time as they need to smooth things out.
Score: 12 Votes (Like | Disagree)
PaulKemp Avatar
157 months ago
Sorry to be the Grammar Nazi, but it should be a "number of new features."

Nobody likes nazies. Unless they are zombies as well.
Score: 11 Votes (Like | Disagree)

Popular Stories

iOS 18 Siri Integrated Feature

iOS 18 Will Add These New Features to Your iPhone

Friday April 12, 2024 11:11 am PDT by
iOS 18 is expected to be the "biggest" update in the iPhone's history. Below, we recap rumored features and changes for the iPhone. iOS 18 is rumored to include new generative AI features for Siri and many apps, and Apple plans to add RCS support to the Messages app for an improved texting experience between iPhones and Android devices. The update is also expected to introduce a more...
iGBA Feature

Game Boy Emulator for iPhone Now Available in App Store Following Rule Change [Removed]

Sunday April 14, 2024 8:06 am PDT by
A week after Apple updated its App Review Guidelines to permit retro game console emulators, a Game Boy emulator for the iPhone called iGBA has appeared in the App Store worldwide. The emulator is already one of the top free apps on the App Store charts. It was not entirely clear if Apple would allow emulators to work with all and any games, but iGBA is able to load any Game Boy ROMs that...
top stories 13apr2024

Top Stories: M4 Mac Roadmap Leaked, New iPads in Second Week of May, and More

Saturday April 13, 2024 6:00 am PDT by
Apple's hardware roadmap was in the news this week, with things hopefully firming up for a launch of updated iPad Pro and iPad Air models next month while we look ahead to the other iPad models and a full lineup of M4-based Macs arriving starting later this year. We also heard some fresh rumors about iOS 18, due to be unveiled at WWDC in a couple of months, while we took a look at how things ...
new best buy blue

Best Buy Opens Up Sitewide Sale With Record Low Prices on M3 MacBook Air, iPad, and Much More

Saturday April 13, 2024 7:41 am PDT by
Best Buy this weekend has a big sale on Apple MacBooks and iPads, including new all-time low prices on the M3 MacBook Air, alongside the best prices we've ever seen on MacBook Pro, iPad, and more. Some of these deals require a My Best Buy Plus or My Best Buy Total membership, which start at $49.99/year. In addition to exclusive access to select discounts, you'll get free 2-day shipping, an...
iGBA Feature

Apple Removes Game Boy Emulator iGBA From App Store Due to Spam and Copyright Violations

Sunday April 14, 2024 9:22 pm PDT by
Apple today said it removed Game Boy emulator iGBA from the App Store for violating the company's App Review Guidelines related to spam (section 4.3) and copyright (section 5.2), but it did not provide any specific details. iGBA was a copycat version of developer Riley Testut's open-source GBA4iOS app. The emulator rose to the top of the App Store charts following its release this weekend,...
iOS 18 Siri Integrated Feature

Apple's First AI Features in iOS 18 Reportedly Won't Use Cloud Servers

Sunday April 14, 2024 9:52 am PDT by
Apple's first set of new AI features planned for iOS 18 will not rely on cloud servers at all, according to Bloomberg's Mark Gurman. "As the world awaits Apple's big AI unveiling on June 10, it looks like the initial wave of features will work entirely on device," said Gurman, in the Q&A section of his Power On newsletter today. "That means there's no cloud processing component to the...