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Level 1

16 points

BLUE SCREEN freeze, fixing after Leopard install

I thought I would post this for Mac users who may be having startup problems after installing Leopard. Please note, I will not pass myself off as an expert, just a normal Joe trying to get my Mac going.

I used a combination of advice after reading the discussions myself for about an hour. My personal opinion is that there is a glitch in the install software that does not allow the computer to log in to the user correctly after the Leopard install. Here is my step by step fix for my problem.

•Start the affected computer up in Target Disc Mode via Firewire cable to a working Mac.

•Navigate into the affected Mac's drive after it appears on the host Mac's desktop and delete the following 2 files:

/Library/Preferences/com.apple/loginwindow.plist
/Users/username/Library/Preferences/com.apple.loginwindow.plist

I am going to guess that if you have more than one user, you will need to delete all the users loginwindow.plist

•Empty the trash can.

•Push and hold the power button on the affected Mac until it shuts down. After shutdown, unplug the firewire cable, then restart the affected Mac.

•Be patient. It takes a little time to start up.

•If this does not solve your problem, then go through the Target Disc Mode process again and delete these files if you can find them:

/Library/Preference Panes/Application Enhancer.prefpane
/Library/Frameworks/Application Enhancer.framework
/System/Library/SystemConfiguration/Application Enhancer.bundle
/Library/Preferences/com.unsanity.ape.plist

•Empty the trash can.

•Power down the affected Mac, disconnect the firewire cable, restart the Mac. Don't be surprised if it takes quite a while for the Mac to index the files after startup.

Good Luck.

•Please be sure to post your success or lack of success so others can benefit from the advice.

A WISH TO THANK EVERYBODY WHO CONTRIBUTES TO THE DISCUSSIONS. YOUR ADVICE IS INVALUABLE, AND AT TIMES HAS SAVED MY U KNOW WHAT. THANK YOU VERY MUCH. -JA

PowerMac G5 Dual 2.0, Mac OS X (10.5)

Posted on Oct 26, 2007 9:25 PM

79 replies

Oct 27, 2007 6:11 PM in response to Gone with the Wind

I don't have Application Enhancer (whatever that is) installed, but I do have Perian installed. I get a blue screen for about 20 or 30 seconds when I startup (there's no progress bar) then it goes straight to my desktop. Would Perian be doing this?

morphee

Level 1

0 points

Oct 27, 2007 7:05 PM in response to Serendipity1

Thank you so much! I thought I had bricked my Powerbook. Just trying to get a phone tech from apple was sooo long (45 minutes of wait and I had to hang up)!! But when I saw you message I couldn't believe my luck. Thank you again.

Serendipity1 Author

Level 1

16 points

Oct 27, 2007 7:36 PM in response to morphee

Oh, Victory snatched from the jaws of Defeat.

How sweet it is! Enjoy the Mac again.

The success of the thread has even astounded me. I am so happy to receive emails from others who have had the same success getting past blue screen glitch.

Jimschan

Level 1

10 points

Oct 27, 2007 8:00 PM in response to Serendipity1

I have done all of the above and still have bluescreen on my macbook pro

any thoughts

Oct 27, 2007 8:13 PM in response to Serendipity1

I cheated!

Before installing, I did a Google Search for Problems Installing OS X Leopard and made my way here..

When I went to the unsanity site, the enhancer looked like something I never would have installed so was about to proceed, then did a Spotlight search. Sure enough, I was able to locate all but one file name, the one ending with ".framework"

I deleted all of these one by one, emptied Trash; rebooted to make sure none reappeared.

After all of that I was able to go ahead and boot up the installation drive with no hassles and am running fine! Did not have to do an archive and install or anything else.

Sorry you all paid the price by being the first to run into the Application Enhancements bug, but thank you very much - I am one of many that will greatly benefit by this thread!

Serendipity1 Author

Level 1

16 points

Oct 27, 2007 8:16 PM in response to Jimschan

Sir,

Might I ask if you used Target Disc Mode or Line Command to attempt your fix?

J

Oct 27, 2007 8:21 PM in response to AppleTalker

It is possible.... but at least you do get booted up. Try uninstalling Persian and see what happens.

You opened system preferences and nothing else is installed under the "Other" row? Anything installed here could be disruptive. These are 3rd party preference plugins and is where the infamous "APE" plugin resided.

Any that have not upgraded yet:
It also won't hurt to use spotlight to do a search for "APE" or "Application Enhancer" before upgrading to see if you downloaded it somehow, then get rid of it as described in these threads. (It also has an uninstall)

Oct 27, 2007 9:02 PM in response to morphee

Your welcome. For the benefit of others, also read Apple's official document which describes the use of the command line and archive/install:

http://docs.info.apple.com/article.html?artnum=306857

http://docs.info.apple.com/article.html?artnum=301270

Serendipity1 Author

Level 1

16 points

Oct 28, 2007 7:23 AM in response to AdamLamar

That is not cheating, that's getting your ducks in a row.

Good Job!

Oct 28, 2007 7:30 AM in response to Serendipity1

I knew I had the App Enhancer on my machine and saw all the posts about removing it first but decided to try anyway. Booted installer and ran it twice looked like it installed but was still running 10.4 after rebooting. Did the steps in Apple Tech Note, ran the installer for upgrade and it ran fine and restarted in 10.5.
Glad I checked this sight before installing. A few minutes now saves lots of time later!

Oct 28, 2007 8:05 AM in response to Serendipity1

I must commend all who have participated in this discussion.
The Apple Community ROCKS!

jdswier

Level 1

0 points

Oct 28, 2007 9:45 AM in response to Serendipity1

I had the same thing happen on G4 MDD when I installed Tiger and when I installed Leopard. It took some trouble shooting, but when I installed Tiger I found out that the freeze was from the video card I had installed (AGP ATI x800 xt 256mb). So I took an old ATI PCI video card, installed in an empty PCI slot, connected monitor, and then installed Tiger with no problems. After install I hooked back up to the AGP ATI card and it worked great. So when my G4 froze with the Leopard installation I did the same thing, switched to old PCI video card and installed with no problems whatsoever, then switched to AGP card after install.

romad

Level 3

887 points

Oct 28, 2007 9:53 AM in response to Serendipity1

Serendipity1 wrote:
•If this does not solve your problem, then go through the Target Disc Mode process again and delete these files if you can find them:

/Library/Preference Panes/Application Enhancer.prefpane
/Library/Frameworks/Application Enhancer.framework
/System/Library/SystemConfiguration/Application Enhancer.bundle
/Library/Preferences/com.unsanity.ape.plist

According to Unsanity, you need to have APE version 2.0.3. So upgrading to it first might help. However, none of Unsanity's other software works yet with Leopard. They were in the process of downloading the 6.6 GB Developer's GM version of Leopard yesterday.

Oct 28, 2007 11:05 AM in response to Serendipity1

Your solution worked perfectly for me, thanks very much. Apple really dropped the ball on this.

One question: I deleted the first two files as you suggested below, but my computer does not recognize my administrator name. Do you have any idea on how to restore that?

Thanks for your help.

Serendipity1 Author

Level 1

16 points

Oct 28, 2007 11:14 AM in response to Charles Hodges

Sir,

I apologize for not exactly understanding what you need...

Are you able to log in to your account now?

Once you are in, you can go to "Accounts" in your System Preferences and re-assign the automatic login option to your account under "Login Options".

If you cannot remember your login information, that is, your user name and password, let me know and I can assist you in fixing that.

-J

BLUE SCREEN freeze, fixing after Leopard install