Crashing upon opening on macOS Sonoma 14.6

[ayyydoc]

Issue type

Crash or freeze

Description with steps to reproduce

1. Open MuseScore 4
2. The MuseScore 4 logo will show just for it to crash.

I have already tried to factory reset my MuseScore 4[ per the instructions listed here](https://musescore.org/en/handbook/4/r
This fixes the problem temporarily; then, it goes right back to crashing. I have attached a video and the crash report that I copied and pasted from the dialog.

This temporarily fixes the problem, but then it goes right back to crashing. It's pretty frustrating, and this is really the first time I've had an issue with MuseScore in its new version.

I've checked the forum for a formal report matching my circumstances but have yet to find one. I hope my search was comprehensive lest I've duplicated an existing case.

Please let me know if you need additional information.

My best!!

— DANIEL B

Supporting files, videos and screenshots

480p.musescore.crashing.mov

Problem Report for MuseScore Studio.txt

What is the latest version of MuseScore Studio where this issue is present?

4.3.2

Regression

Yes, this used to work in a previous version of MuseScore 4.x

Operating system

macOS Sonoma 14.6

Additional context

No response

Checklist

• This report follows the guidelines for reporting bugs and issues
• I have verified that this issue has not been logged before, by searching the issue tracker for similar issues
• I have attached all requested files and information to this report
• I have attempted to identify the root problem as concisely as possible, and have used minimal reproducible examples where possible

[cbjeukendrup]

Thanks for this report! The crash report looks very similar to #23277; so this issue might turn out to be a duplicate of that one, but perhaps let's keep both open for now, just in case.

The difficulty with this crash is that on the one hand it is critical, because it means you can't use MuseScore at all, but on the other hand we cannot reproduce it ourselves, so it is almost impossible for us to fix it.

Perhaps the fact that a factory reset temporarily fixes it can give us a clue. Could you try the following:

1. Perform factory reset
2. Close and reopen MuseScore, without doing anything in between; repeat arbitrarily many times.
   I wonder whether it will start crashing again when just opening/closing and doing nothing in between. If yes, after how often? If not, of course you can't be 100% sure, because you can never know how many times you need to try before it starts crashing, but still, if it doesn't crash after a reasonable amount of tries, that might be a clue.

Depending on the result of that test, a next test would be:

1. Perform factory reset
2. Open MuseScore
3. Perform one very simple action (e.g. opening some dialog and directly closing it; or opening a score and closing it)
4. Close MuseScore

And again, repeat this a few times, but do the same in-between action every time. If the chosen action doesn't result in a crash after a few attempts, try another action.

This way, you might be able to find out which in-between action results in a crash on the next launch.

Thanks in advance!

[cbjeukendrup]

@ayyydoc Sorry, one more request: after reproducing the crash, could you please do the following:

1. Open Finder
2. Press Cmd+Shift+G
3. Paste ~/Library/Application Support/MuseScore/ and press Return
4. Ctrl+click the MuseScore4 folder and choose "Compress" from the menu
5. Upload the resulting ZIP file here
6. After doing that, you can delete the ZIP file again, because you won't need it anymore

Thanks!

[ayyydoc]

Thanks for this report! The crash report looks very similar to #23277; so this issue might turn out to be a duplicate of that one, but perhaps let's keep both open for now, just in case.

The difficulty with this crash is that on the one hand it is critical, because it means you can't use MuseScore at all, but on the other hand we cannot reproduce it ourselves, so it is almost impossible for us to fix it.

Perhaps the fact that a factory reset temporarily fixes it can give us a clue. Could you try the following:

1. Perform factory reset
2. Close and reopen MuseScore, without doing anything in between; repeat arbitrarily many times.
   I wonder whether it will start crashing again when just opening/closing and doing nothing in between. If yes, after how often? If not, of course you can't be 100% sure, because you can never know how many times you need to try before it starts crashing, but still, if it doesn't crash after a reasonable amount of tries, that might be a clue.

Depending on the result of that test, a next test would be:

1. Perform factory reset
2. Open MuseScore
3. Perform one very simple action (e.g. opening some dialog and directly closing it; or opening a score and closing it)
4. Close MuseScore

And again, repeat this a few times, but do the same in-between action every time. If the chosen action doesn't result in a crash after a few attempts, try another action.

This way, you might be able to find out which in-between action results in a crash on the next launch.

Thanks in advance!

Thank you so much!!
Here's a result of what I did:

FIRST TEST:

• I performed a factory reset per the link above
• The application launched via the command
• I'm given the prompt: "Welcome to MuseScore 4" and to pick a light or dark theme.
• I don't pick a color but rather "Cmd+Q" and reopen the application 25 times. It opens each time without error with the same Welcome prompt.

SECOND TEST:

• I performed another factory reset.
• The app launched via command
• I'm given the welcome prompt - I choose dark.
• I skip through the tutorial videos
• I open my score and close it.
• CMD + Q Musescore and Terminal—in that order.
• It crashes immediately. (Before, I would have a few sessions before it crashed.
  ————————————
  I repeat the above steps, but this time, I open the "Preferences" tab. and click around a few sections without changing any settings. I force-quit MuseScore and Terminal. It crashes immediately.

[ayyydoc]

3. ~/Library/Application Support/MuseScore/

MuseScore4.zip
Thank you!

[cbjeukendrup]

Thanks! I'll think about these results, hopefully they will lead to ideas.