Cannot save existing .mscz file on Macosx Mojave 10.14.2

• Jan 7, 2019 - 02:04
Reported version
3.0
Type
Functional
Frequency
Once
Severity
S3 - Major
Reproducibility
Always
Status
active
Regression
No
Workaround
No
Project
MuseScore

OS: macOS 10.14, Arch.: x86_64, MuseScore version (64-bit): 3.0.0.20137, revision: c1a5e4c

Opening a .mscz file and then trying to save it causes Musescore to exit.
It will "save as" as .mscx file though.