musescore / musescore/MuseScore

Can't open mxl file with zip version 45

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MusicXML tech debt
Dominant language
C++
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Description

Issue type

Opening/saving issue

Bug description

Can't open attached mxl file because the zip version is 45

Steps to reproduce

Attempt to open file
Composition1.SHY_.mxl.zip
(note I had to rename it to zip because of the webform). MuseScore thinks it's a bad format:
image
Click Yes:
image

Screenshots/Screen recordings

No response

MuseScore Version

OS: Windows 10 Version 2009 or later, Arch.: x86_64, MuseScore Studio version (64-bit): 4.3.0-241231433, revision: github-musescore-musescore-5f36e74

Regression

No.

Operating system

Windows 11

Additional context

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the problem with the attached Composition1.SHY_.mxl.zip file in MuseScore Studio 4.3.0 on Windows 11. Trace the file-opening path for the ZIP version 45 rejection; done means the attached MXL file opens successfully without the bad-format prompt.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
desktop
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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