As per AppImage guidelines, please target the oldest still supported LTS release, which is trusty at this time. This will ensure that the resulting binary will run on all still-supported Ubuntu releases.
Dec 30 2018
Dec 6 2018
Thank you @kossebau, really nice to see this.
Is the crashing AppImage available for download? I'd like to have a look at it.
This may be part of a broader discussion, namely, how to handle application bundles (ROX AppDirs, Mac bundles, GNUstep bundles, AppImages) and applications that are not installed, but rather can "come and go" dynamically.