can't open score created with earlier development build
This issue came up as part of the investigations for #124876: Lyrics: Underscore is too long and overlaps and #132801: Horizontal Scrolling Breaks, where sample scores for those issues don't open in current master (a819eb6) anymore with an error message reg. bad format.
In both cases MuseScore 2(.2.1) can open these files (after ignoring the message that these are for a new version)
1st file, Neusidler,_Buch_1.mscz, created with 3543170 (master branch, I'm not sure this information taken from the score is correct, as that commit is from before 2.0 came out), gives:
The code in the mscx looks pretty innocent:
<beginText> <text>1.</text> </beginText>
Here it can be seen, in 2.2.1, that this volta 1 spans 2 measure (measures 7 and 8) and as such overlaps with volta 2 (measure 8)
Possibly due to the fact that it is an irregular measure?
<beginText> <text>cresc.</text> </beginText>
Here it seems that maybe MuseScore doesn't like the combination of measure repeats with hairpins (in measure 30)?
Very strange that these hairpins have a
While it is documented that newer versions of the development branch may not be read ofiles created with older versions of that branch, I think here something is really going wrong that wasn't intentional