[MD1] Disabling the CFM-68K Runtime
TweetFollow Us on Twitter

[MD1] Disabling the CFM-68K Runtime

Apple recommends customers disable the CFM-68K Runtime Enabler extension

Apple Computer has discovered a bug in the CFM-68K Runtime Enabler
extension that can affect the stability of Macintosh computers based on the
680x0 processor. This extension allows the use of certain applications on
680x0 computers, and is installed by an application installer only if the
application requires the extension. Customers will know they have this
extension installed if the file " CFM-68K Runtime Enabler" (note that the
file name begins with a space) is located in their Extensions folder which
resides inside their System folder.

In certain circumstances, the bug can cause applications which rely on the
CFM-68K Runtime Enabler to not function properly, resulting in application
instability and potential loss of data. The most obvious symptoms are what
appear to be random system crashes and hangs. Macintosh and Mac
OS-compatible computers based on the PowerPC processor are not affected by
this bug.

Because of the potential quality impact of this bug, Apple is recommending
that customers with computers based on the 680x0 processor disable the
CFM-68K Runtime Enabler extension and not use programs which rely on this
extension. See below for instructions on how to disable this extension.
Apple is currently working to resolve this bug.

What is the CFM-68K Runtime Enabler?

The CFM-68K Runtime Enabler is an extension which makes it easier for
developers of applications to design their programs to run on both 680x0
and PowerPC computers without having to write separate programs for both
processor families.

On a more technical level, the Code Fragment Manager ("CFM") was originally
introduced by Apple only for Macintosh and Mac OS-compatible computers
based on the PowerPC processor. It allows applications to share their
programming code through special files known as shared libraries. In
addition to being able to share programming code, applications which are
programmed to use shared libraries can reduce their memory requirements. In
response to the success of the PowerPC version of CFM, Apple introduced a
version of CFM for Macintosh computers based on the 680x0 processor. This
version of CFM for 680x0-based Macintosh computers is the CFM-68K Runtime
Enabler extension.

What applications are affected by this bug?

Only applications which have been explicitly programmed to use the CFM-68K
Runtime Enabler can be affected by this bug. Apple Computer products which
rely on CFM-68K Runtime Enabler are: OpenDoc, Cyberdog, LaserWriter
(versions 8.4 and 8.4.1 only), and the Apple Media Tool. Only the 68k
versions of these software packages are affected. This bug does not affect
PowerPC versions of these products. There are currently few applications
which rely on the CFM-68K Runtime Enabler and therefore Apple does not
believe that this problem is very widespread.

You can identify applications which rely on the CFM-68K Runtime Enabler
extension once the extension is disabled (see below for instructions on
disabling the extension). When the CFM-68K Runtime Enabler is disabled,
applications which rely on it will report the following error when you
attempt to launch them:

*

Is this bug caused by these applications?

Not directly. The bug is caused by the use of CFM-68K Runtime Enabler in
ways it was not designed to handle. Unfortunately, its limitations were not
recognized by the applications.

What should I do if I have installed one of these affected products?

If you have installed OpenDoc or Cyberdog, you should not use these
products until Apple releases a solution for this problem. If you have
installed LaserWriter version 8.4 or 8.4.1, you should install LaserWriter
version 8.3.4, which does not rely on the CFM-68K Runtime Enabler. If you
do not have LaserWriter 8.3.4, you can download it from the Apple support
site on the World Wide Web, which is located at:

http://www.info.apple.com/

If you are a member of the Apple Media Tool developer community, please
visit the AMT web site at http://amt.apple.com/ for more information.

If you have a PowerPC-based Macintosh or Mac OS-compatible computer, your
computer is not affected by this problem. Therefore, you can continue to
use these products.

Should I contact third-party application developers about this problem?

No. Since a fix for this problem will be accomplished by modifying Apple's
CFM-68K Runtime Enabler, third-party application developers will be unable
to assist you with this problem.

How do I disable this extension?

There are two ways to disable this extension. One is to drag the extension
out of the Extensions folder which resides in your System Folder. The other
is to use the Extensions Manager control panel.

To disable the CFM-68K Runtime Enabler extension using the Extensions
Manager control panel, perform the following steps:

1. Open the Apple menu item and select Control Panels.

2. Locate Extensions Manager and double click it to open it.

3. Locate " CFM-68K Runtime Enabler". Note that there is a space at the
beginning of the name. You should find this extension near the top of the
Extensions Manager window under the Extensions heading, similar to this:

*

4. If there is a check mark ("") next to CFM-68K Runtime Enabler, click on
it so that there is no check mark.

5. Close the Extensions Manager window.

6. Restart your computer.

Is this bug caused by recent changes in the CFM68k Runtime Enabler?

No. This bug exists in all currently shipping versions of CFM-68K Runtime
Enabler, but was found during recent testing.

Why has it taken Apple this long to identify this bug?

Only recently have applications begun to make use of the CFM-68K Runtime
Enabler extension. The conditions which cause this bug have only been
exposed by recent increased use of the extension by applications.

I have a PowerPC computer. Does this affect me?

No. The bug is only in the CFM-68K Runtime Enabler extension, which runs
only on Macintosh computers based on the 680x0 processor. The Mac OS on
PowerPC computers does have code fragment capabilities, but it is
accomplished through different programming techniques not affected by this
bug.

What is Apple doing to fix this bug?

Apple has assigned a team of engineers to develop a solution for the bug.
At this time, there is not enough information to make any statements about
delivery of a solution.

How can I get the technical details about this bug?

Apple has a Technote about this bug available on the World Wide Web at:

http://devworld.apple.com/dev/technotes/tn/tn1084.html

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

WhatsApp 0.2.5862 - Desktop client for W...
WhatsApp is the desktop client for WhatsApp Messenger, a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS. WhatsApp Messenger is available for... Read more
Things 3.1.3 - Elegant personal task man...
Things is a task management solution that helps to organize your tasks in an elegant and intuitive way. Things combines powerful features with simplicity through the use of tags and its intelligent... Read more
BetterTouchTool 2.292 - Customize Multi-...
BetterTouchTool adds many new, fully customizable gestures to the Magic Mouse, Multi-Touch MacBook trackpad, and Magic Trackpad. These gestures are customizable: Magic Mouse: Pinch in / out (zoom... Read more
Things 3.1.3 - Elegant personal task man...
Things is a task management solution that helps to organize your tasks in an elegant and intuitive way. Things combines powerful features with simplicity through the use of tags and its intelligent... Read more
BetterTouchTool 2.292 - Customize Multi-...
BetterTouchTool adds many new, fully customizable gestures to the Magic Mouse, Multi-Touch MacBook trackpad, and Magic Trackpad. These gestures are customizable: Magic Mouse: Pinch in / out (zoom... Read more
Bookends 12.8.3 - Reference management a...
Bookends is a full-featured bibliography/reference and information-management system for students and professionals. Bookends uses the cloud to sync reference libraries on all the Macs you use.... Read more
Mellel 3.5.5 - The word processor for sc...
Mellel is the leading word processor for OS X and has been widely considered the industry standard since its inception. Mellel focuses on writers and scholars for technical writing and multilingual... Read more
Mellel 3.5.5 - The word processor for sc...
Mellel is the leading word processor for OS X and has been widely considered the industry standard since its inception. Mellel focuses on writers and scholars for technical writing and multilingual... Read more
Bookends 12.8.3 - Reference management a...
Bookends is a full-featured bibliography/reference and information-management system for students and professionals. Bookends uses the cloud to sync reference libraries on all the Macs you use.... Read more
Carbon Copy Cloner 4.1.18 - Easy-to-use...
Carbon Copy Cloner backups are better than ordinary backups. Suppose the unthinkable happens while you're under deadline to finish a project: your Mac is unresponsive and all you hear is an ominous,... Read more

Guild sieges and soul gems in latest upd...
Webzen’s MU Origin hit app stores last year, giving fans of fantasy hack-n-slash MMOs like Diablo a new fix to fixate on. This latest update introduces a competitive guild battle, a fresh dungeon challenge, a mini-game and some elemental gems to... | Read more »
Little Red Lie (Games)
Little Red Lie 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: ARE YOU MORE AFRAID OF POVERTY THAN DEATH? Little Red Lie is a narrative-focused, interactive fiction experience that reduces... | Read more »
You can now apply to be Clash of Clans...
Earlier this month, word got out that the Builder, the trusty handiman who tirelessly built every single building inevery singleClash of Clansbase had called it quits. Sick of seeing his work destroyed endless, the Builder has set out for our world... | Read more »
Meshi Quest beginner's guide - how...
Meshi Quest is Square Enix's newest free-to-play release, and it's a real charmer. You start off as the head of a sushi restaurant, upgrading your food and equipment as you serve visitors heaping helpings of your delicious meals. As you progress,... | Read more »
BUST-A-MOVE JOURNEY (Games)
BUST-A-MOVE JOURNEY 1.0.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0.0 (iTunes) Description: BUST-A-MOVE Features:- Shoot bubbles and match 3 or more bubbles of the same color to make them pop!- Complete your... | Read more »
The best card combos in Clash Royale
Clash Royale is all about building a deck of units that synergise well. To help you get off to a flying start, we've put together a list of unit combinations that are incredibly effective. Looking for some choice 2v2 combos? Check out our guide. [... | Read more »
The best 2v2 card combos in Clash Royale
2v2 is making it's grand return toClash Royalequite soon. 2v2 has quickly become one of the game's most popular gameplay modes, though they still have yet to make it a permanent fixture in the game. 2v2 is exciting and adds some new flavor to... | Read more »
The best games we played this week - Aug...
Another busy week has come to a close. We played a lot of excellent games this week and now it's time to look back and reflect on some our favorites. Here are our picks for the week of August 18. [Read more] | Read more »
War Wings beginner's guide - how to...
War Wings is the newest project from well-established game maker Miniclip. It's a World War II aerial dogfighting game with loads of different airplane models to unlock and battle. The game offers plenty of single player and multiplayer action. We... | Read more »
How to win every 2v2 battle in Clash Roy...
2v2 is coming back to Clash Royale in a big way. Although it's only been available for temporary periods of time, 2v2 has seen a hugely positive fan response, with players clamoring for more team-based gameplay. Soon we'll get yet another taste of... | Read more »

Price Scanner via MacPrices.net

2016 MacBook Pros, Apple refurbished, availab...
Apple has Certified Refurbished 2016 15″ and 13″ MacBook Pros available starting at $1189. An Apple one-year warranty is included with each model, and shipping is free: – 15″ 2.7GHz Touch Bar Space... Read more
Apple offers Certified Refurbished iPhone 6s...
Apple has Certified Refurbished unlocked iPhone 6s’s and 6s Plus’s available starting at $449. An Apple one-year warranty is included with each phone, and shipping is free: – 16GB iPhone 6s: $449, $... Read more
Apple offers Certified Refurbished Pencils fo...
Apple has Certified Refurbished Apple Pencils available for $85 including free shipping. Their price is $14 off MSRP, and it’s the lowest price available for a Pencil. Read more
2016 15-inch 2.6GHz Touch Bar MacBook Pro ava...
B&H Photo has clearance 2016 15″ 2.6GHz MacBook Pros in stock today and on sale for $500 off original MSRP. Shipping is free, and B&H charges NY & NJ sales tax only: – 15″ 2.6GHz Touch... Read more
21-inch 2.3GHz iMac on sale for $999, save $1...
Amazon has the new 2017 21″ 2.3GHz iMac (MMQA2LL/A) in stock and on sale for $999.99 including free shipping. Their price is $100 off MSRP, and it’s the lowest price available for this model. Read more
Free Instant Translator 2.0 App For iOS Relea...
Mobile application development company, Neoappz has announced the release and immediate availability of Instant Translator 2.0 for iOS devices. Instant Translator is a user-friendly application which... Read more
2017 15-inch MacBook Pros on sale for $200 of...
Amazon has 2017 15″ MacBook Pros on sale for $200 off MSRP. Shipping is free: – 15″ 2.8GHz MacBook Pro Space Gray: $2199.99, $200 off MSRP – 15″ 2.8GHz MacBook Pro Silver: $2296, $103 off MSRP – 15″... Read more
Apple’s 2017 Back to School Promotion: Free B...
Purchase a new Mac using Apple’s Education discount, and take up to $300 off MSRP. All teachers, students, and staff of any educational institution qualify for the discount. Shipping is free. As part... Read more
Clearance 2016 12-inch Retina MacBooks, Apple...
Apple has Certified Refurbished 2016 12″ Retina MacBooks available starting at $1019. Apple will include a standard one-year warranty with each MacBook, and shipping is free. The following... Read more
15-inch 2.2GHz Retina MacBook Pro, Apple refu...
Apple has Certified Refurbished 2015 15″ 2.2GHz Retina MacBook Pros available for $1699. That’s $300 off MSRP, and it’s the lowest price available for a 15″ MacBook Pro. An Apple one-year warranty is... Read more

Jobs Board

Development Operations and Site Reliability E...
Development Operations and Site Reliability Engineer, Apple Payment Gateway Job Number: 57572631 Santa Clara Valley, California, United States Posted: Jul. 27, 2017 Read more
Frameworks Engineering Manager, *Apple* Wat...
Frameworks Engineering Manager, Apple Watch Job Number: 41632321 Santa Clara Valley, California, United States Posted: Jun. 15, 2017 Weekly Hours: 40.00 Job Summary Read more
*Apple* Retail - Multiple Positions - Apple,...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
Development Operations and Site Reliability E...
Development Operations and Site Reliability Engineer, Apple Payment Gateway Job Number: 57572631 Santa Clara Valley, California, United States Posted: Jul. 27, 2017 Read more
Frameworks Engineering Manager, *Apple* Wat...
Frameworks Engineering Manager, Apple Watch Job Number: 41632321 Santa Clara Valley, California, United States Posted: Jun. 15, 2017 Weekly Hours: 40.00 Job Summary Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.