Pre-2.0 score looks empty in 3.0

This score opens as expected here with the current master: 1fff7f6
And since three days before with: c4307e1

Indeed, before, with this nightly and the previous ones, the score was empty: cf9fc61

This claims to be a 2.0.0 score (produced with 1132f3d, from Apr 5 2014, and as such quite a bit older than 2.0.0, which got released March 23, 2015, almost a year later), but doesn't have a thumbnail image inside the mscz.
So this file stems from some rather old pre-2.0 development build, and I don't think we need to support opening it?
It contains layers, back then an experimental feature, since disabled. Removing those 2 lines and the score opens in master

<?xml version="1.0" encoding="UTF-8"?>
<museScore version="1.24">
  <programVersion>2.0.0</programVersion>
  <programRevision>1132f3d</programRevision>
  <Score>
    <LayerTag id="0" tag="default"></LayerTag>
    <currentLayer>0</currentLayer>
    <Synthesizer>
      </Synthesizer>
    <Division>480</Division>

No way we can support all nightlies... I close this issue.

That's what I thought too.