Vienna crashes on launch

[reverb77]

Hey all, I've been using (and loving) Vienna over the last few months, but all of a sudden it has stopped opening up. I updated the software yesterday, so I thought it might be because of a bug and tried to install an older version, but that's not working either. I have become heavily dependent on this app, so any help would be much appreciated!

[reverb77]

Am I the only one this has happened to? I'm running High Sierra 10.13.6, and there are no crash reports.