Logic Pro X 10.4.5 not opening

*potential idiot update*

The support guys only told me to delete one of the logic preference files in ~/Library/Preferences, so that's all I tried.

Just had a go at deleting all three files that said 'Logic' in them aaaaand that has worked!

Thanks, unfortunately Logic still crashes for me after deleting and rebooting. Replacing 10.4.5 app with 10.4.4 gets me back online.

Hi guys,

I've also had this problem.... Spent hours with Support but they've 'escalated' it as we didn't make any progress.

Deleting the preference files didn't make a difference in my case, but weirdly I set up another admin user account for my laptop (as part of the tests with support) and it doesn't crash while opening in that profile......

They're going to get back to me after the weekend so for now I've just got to share my files and do the switch.....

Has anyone had any other breakthroughs on this matter?

thanks

Prefs has been explained a dozen times in the last two weeks, and has been used to help clear issues for years.

It's the file Logic creates for it's preference settings. When you adjust preferences In Logic changes are made and saved to a preference file located in the computers User/Library/Preferences folder.

8. Delete user preferences

Before deleting user preferences, note any specific preference settings that you’ve made, and save any custom key commands you've created. Deleting preferences removes any custom preference settings and custom key commands.

To delete the user preferences, do the following:

1. Quit Logic Pro X.
2. In the Finder, choose Go > Go to Folder.
3. Enter ~/Library/Preferences, then click Go. (Note: exactly as written) ~/Library/Preferences
4. Remove the "com.apple.logic10.plist" file from the Preferences folder.
5. If you upgraded from an earlier version of Logic Pro, also remove the "com.apple.logic.pro" file. It is also advisable to delete the com.apple.logic.pro.cs file.
6. Restart your Mac.

Don't do this if you're not having problems.

Did you try creating a new user account, reboot sign into it and test Logic.

Chris,

See the last half of my post in this topic:

https://discussions.apple.com/thread/250420998

It's in the user library and is a hidden folder.

ALL:

Evidently there are problems in 10.5 with control surfaces, several people have had errors.

Hello,

after deleting my prefs (.plist/.cs) no result. Logic hangs at startup.

But....using the control key as a startup modifier, logic starts without the core audio driver. After this it loads....maybe this helps to find a solution!

gr Henri

Mop,

It's mainly the control surfaces files and possibly and old Logic 9 preference file. However, there are many have problems with Control Surfaces causing crashes.

Same here back to 10.3.2 till Apple get this fixed - tried everything else seems something is very wrong with this update perhaps for older gear - I have a 2014 Mac running latest software - not that old i thought - lets see

Very important to report these problems.

https://www.apple.com/feedback/logic-pro.html

Hey there,

Not only have I tried deleting the LPX preferences, but I too have attempted to create a user account and reboot/sign in. Neither have worked out for me. Still can't open Logic.

Any other solutions? Is there any way to get into 10.4.4 again?

thanks

Thank you Pancenter

Whilst I appreciate the info, I wouldn't dare do that myself, I already have Terminal popping up every few minutes because of pressing things I didnt understand.

If I deleted an earlier version of Logic, as you say above, would that mean I have lost that earlier version?

Meantime I am not having Logic problems, so I wont do it anyway! if I did have I think its best to take it to the Apple Store or a professional.

Sorry again for the hijack of this thread

I just read a couple other posts with same problem.

Try deleting LPX prefs, which solved it for them.

Perhaps just move them to desktop first then retry LPX.

If it does not help put them back..

Where is that file? I don't see it in my preferences folder.

Thanks