Crash when loading old files

[lostarwint]

Issue type

VST bug

Description with steps to reproduce

Version 3.4.2 (build 45422) [64-bit VST 3]-20260713-155316.dmp

Supporting files, videos and screenshots

In which versions of MuseScore Studio is this issue present?

4.7.3 and later

Regression

Choose option...

Operating system

Windows 11

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

[MarcSabatella]

Please ZIP and attach the score that triggers the crash.